I'm curious to see how the geopolitical environment of West Berlin affected the the demographics of people who came to watch the World Cup in 1974. Was there any paranoia held by travelers?
Lets have a look at this German source: http://www.motorvision.de/news/fussball-national-wm-1974-groessten-stasi-operationen-ausserhalb-ddr-167028.html
WC '74 lead to one of Stasi's biggest operations. Hundreds of agents were send to West Germany to prevent East German tourists from fleeing.
5188 GDR citizens visited the WC '74.
prior to the world cup the Stasi investigated each one of them. It didn't matter whether it was one of the soccer players, manager or just a fan.
In February 1974 there were about 1700 initial applications from citizens who wanted to visit the world cup. They were all denied and an investigation was started against every single one of them. This meant you could only visit the world cup if the leaders wanted you to.
Bonus: Here's a photo of the match West Germany vs East Germany (they were randomly placed in the same group) which East Germany won 1-0: http://www1.wdr.de/fernsehen/information/sport_inside/sendungen/ddr-wm102_v-ARDFotogalerie.jpg
The matches of East Germany were shown on television in Eastern Germany. The world cup was not shown in the Soviet Union and China.
edit: Some more info regarding number of visiters in the stadiums:
The matches of Germany and the Netherlands were those with the highest number of tickets sold. Also Italian and Yugoslav matches had many visitors because there were many immigrant worker from those countries in Germany.
Many West Germans expected their team to be 1^st in their group so they bought tickets for matches that they expected the German team to play in after the group stage. However Eastern Germany managed to be 1^st in this group so after that their matches had many visitors because West German fans had already bought the tickets. However, many people did not visit the match of Eastern Germany vs Argentina because it was meaningless for both teams. 53k tickets were sold but only 20k people showed up.
The number of visitors was also affected by France and England both not participating in 1974 and of course Bulgaria, Eastern Germany and Poland did not allow many people to visit the WC. Another factor was the time of the year. Stadiums did not have roofs and it rained a lot. So particularly boring matches where not visited when it rained.
source: https://de.wikipedia.org/wiki/Fu%C3%9Fball-Weltmeisterschaft_1974
