The first and the last of your questions have objective answers, I believe, so I'll try to answer those. The others are somewhat more subjective and, as a Swiss, my understanding is bound to be colored by self-serving post-war accounts.

Rationing was definitely in force in Switzerland, extending, for some products, until 1948. Switzerland was far from self-sufficient in food production. During the war, federal minister Friedrich Traugott Wahlen introduced an intense Anbauschlacht (cultivation battle) program to increase agricultural production through measures such as planting potatoes in open spaces in the middle of cities. The effect on actual food production was modest, and most likely the primary objective was psychological, as part of an overall program of Geistige Landesverteidigung (mental national defense). Apart from conventional rationing measures, there also were less obvious measures, such as a legal requirement to let bread go stale for 24/28 hours before selling it, so less would be eaten. There's a fairly good writeup here.

Acts of war spilled over into Switzerland in two ways I know of: First, Switzerland responded to air space violations, and shot down a number of planes from both sides. Some of those planes fired back.

There also were a number of bombings of Switzerland conducted by allied planes. Officially, they were all due to navigation errors, and with some of the locations, this seems plausible, e.g. Schaffhausen and Stein am Rhein, which are north of the river Rhine which generally forms the boundary between Germany and Switzerland. But to bomb a place like Zürich required a sizable navigation error, and there are persistent rumors that the Allies may have wanted to send a message. There are also folk tales of very specific places being hit (factories making parts for Germany, a house being hit where a Swastika flag was found in the rubble), but given the limited accuracy of bombs at the time, these must be urban legends.

I can answer this for Sweden.

Rationing

Rationing was absolutely a thing in Sweden. Once the Germans had taken Norway and Denmark and laid minefields in the North Sea, trade to and from Sweden over the North Sea slowed to a trickle in the so called "lejdtrafiken", a few ships from neutral countries (often Venezuela or Brazil) loaded with oil, fertilizer, maize fodder for cattle or food (grain and meat mostly) that were allowed through both the British blockade and the German mine lines.

During ww1, Sweden faced some acute shortages and price hikes due to trading in non-contraband goods with the Germans and thus ending up under the British blockade as well, which resulted in some severe food riots in the cities during Spring 1917. In 1939, there were large stockpiles of food, a rationing system prepared and extensive control functions to match a price freeze to supply and rationing to ensure that all could get enough food.

One of the strategies employed was to increase milk production, which of course reduced meat production as the same grazing land and fodder otherwise used for animals for slaughter was instead used for milk cows. However, this combined with work to reduce milk in fat from the normal 4,2-4,7% to 3% (still the standard fatness level of milk in Sweden today) ensured that milk was never rationed and a lot of butter, cheese, sourmilk and other milk products could be available.

Rationing was introduced in March 1940 and grew tighter and tighter until Autumn 1942, when due to a bad harvest it reached its lowest, when a normal adult male (without a physically demanding job) would get, per day:

• 22 grams of meat and pork.

• 67 grams of sugar.

• 4 grams of cheese.

• 36 grams of fat (oil, butter, cream etc).

• 3 grams of coffee.

• 170 grams of flour and grits.

• 8 eggs per month.

One can note that fish, wild game, potatoes, milk, vegetables, berries, mushrooms and fruit were never rationed. However, the access to fresh fish was limited due to a lack of refridgerated transport, and traditonal salted and tinned fish would be more common. Wild game was also scarce and you would most likely either pay through your nose or have a hunter in your family to have access to it. Potatoes and milk was available all year around and always in generous supply. Vegetables were locally grown, such as carrots, onion, cabbage, cucumbers and perhaps tomatoes and usually only available in season. Fruit was likewise. Colonial fruit such as pineapples, bananas, oranges and dates were not available at all (except for rare circumstances when a ship brought some tinned or dried in throught lejdrafiken). Local fruit such as pears and apples could be had, but mostly in season unless tinned or preserved.

"Coupon-free" things became common, especially at restaurants. "Don't ask, don't tell" saucages, produced with soy beans and non-rationed meat, such as foxes, badgers, crows, magpies and hares. Many kept hares or rabbits in cages, often fed by grass cut in city parks and similar to increase the availability of meat. Restaurants also started serving various birds - ragout of pigeon, whole fried sea gull or jay could be seen on the menues of restaurants.

As you can see, rationing was harsh, but since milk, potatoes, fish and vegetables were free of rationing during the entire war there was in general no lack of calories nor of nutrients - food certainly became less varied, less exciting and more bland with fewer comforts and treats, but no-one starved.

The question of comforts versus nutrition was hotly debated on the government level during the war, with some arguing that ships comong through lejdtrafiken should carry more things that would increase public morale, such as coffee, tobacco, cocoa, tea and spices, while others argued that grain and other nutrion or calorie dense food should have the priotity.

Reports in newspapers

This is an interesting question, as it varied a lot during the war. The government was in theory not allowed to censor the press, but did nevertheless by enforcing a ban on transporting newspapers that "risked the security of the nation" (ie critizised the Germans a bit too harshly before they had started to lose the war), causing the press to self-censor rather than face not being able to deliver their papers.

Torgny Segerstedt, editor and owner of Göteborgs Handels- och Sjöfartstidning (Gothenburg's Trade and Shipping Paper) was an early opponent of nazism and a fervent critic of Germany and the nazis which caused diplomatic incidents between Sweden and Germany on several occations. On the 13th of March 1942 he printed an article about torture in concentration camps and prisons in German-occupied Norway and was threatened with a ban on transporting the paper and cleverly reprinted it with the offending article cut out, but with the headline still there, showing the censorship and increasing awareness of the situation in Norway and the testiomony by the former Norwegian prisoner that had fled to Sweden. As the war progressed and Germany's fortunes waned, the Swedish press became bolder and the government more and more reulctant to try to rein it in.

Newspapers reported on the war, both through eyewitness accounts, field reporters and by using the official press releases and propaganda of all sides in the war and people generally listened both to BBC's European transmissions and to Radio Königsberg, where Swedish-speakers in German service radioed propaganda for the Swedish public.

Consensus on the war

There were, especially early war, a small minority in Sweden that was in favour of Germany and perhaps even joinign the war. Due to extensive commercial, academic, royal and cultural ties between Sweden and Germany as well as Russia being the traditional arch-enemy of Sweden, this group included some high-ranking officers, pats of the industrial and commercial elite and small parts of the cultural elite. Sweden was also due to close historical ties with Finland very concerned with Finland and aiding it against the Soviet Union, especially during the Winter War, but also to a lesser extent during the Continuation War, and Swedish volunteers served in the Finnish army in both conflicts, about 8 500 in the Winter War, and around 1 000 in the Continuation War.

However, Sweden was never especially nazi (support peaked at 1,7% of the vote split over three parties in the election of 1936, and in 1940 no nazi party dared run for the election), and Sweden, both the public opinion, the armed forces adn the government never forgave the Germans for their attack on Denmark and Norway, both of which were seen as brethren countries and people. The Germans were genuinly surprised by the Swedish hostility because of this and the very lukewarm Swedish response to the "great crusade against bolchevism" in Operation Barbarossa. Only 167 Swedish citizens would volunteer for the SS throughout the war.

Consensus in general supported the policy of neutrality. Sweden had very little to win, could affect very little and bring a lot of devastation and ruin on itself by entering the war. Sweden was in porcupine mode, with points outwards during the war, and that mentality could be seen in public opinion and the general debate. Some wanted to aid Finland more, others wanted to go to war against the Soviets, but they remained a small minority after the Winter War.

Sweden did however draw up plans to invade Norway and Denmark should the German troops there not surrender in 1945 and thus join the Allies for the last weeks of the war, but in the end it proved not necessary.

War in Sweden

War did spill in to Sweden in a minor sense. A Danish infantry company and the remnants of the Norwegian 1. Division retreated into Sweden and were interned according to the neutrality laws in April 1940. The Soviets did bomb Swedish territory by mistyake in 1940, but after some fast convincing by the Soviet Minister in Sweden, Madame Alexandra Kollontaj, the Soviet government acknowledged the mistake, made a public apology and paid reparations for the damages caused. In February 1944 the Soviets also mistakenly bombed Strängnäs, but this time they refused to admit it was them, calling it a German ruse to get Sweden to declare war on the Soviet Union.

For the Swiss, this older answer covers a lot of ground for you.