I'm only in my 30s, so I've never known what life is like in a real "war" in the US, and US citizens have always been able to travel to the areas that we're supposedly at war with. Was that the case during the Civil War?

Could someone take a day trip to the CSA? Could someone from Tennessee take a vacation to New York?

What was the day to day interaction like between average citizens of these two countries? Or was there any?