I think you'll have a marvelous time and the spirit should be great!
My husband, two sons and I scored tickets to the USA v Czech Republic World Cup game in 2006 in Germany. (I never want to hear the name Tomáš Rosický again!)
We traveled during that WC to Belgium and the Netherlands, too. Those three countries had TVs outside for outside dining while watching the games. It was always full. Since the WC this year will be held in November, I'm sure the restaurants/bistros, etc. will have them inside. Those countries were much more demure than fans are from the US, however.
A week later, I was inside Monte Carlo in Monaco and no one was in the iconic room. Then, I heard a huge roar and followed the sound to a sectioned-off room and peeked inside: there were many TVs set up and France had just scored a goal. So, if you want to place some bets in a venerable setting. . .
In 2010, we were in Ireland which hadn't qualified but since we had on our USA jerseys, we were greeted with, "Go USA!" The Irish were very generous. The atmosphere was electric during the games. Again, pubs and restaurants were showing the games.
The same was true of the UEFA Euro 2012 Final when we were in Sweden.
Nothing was closed due to any of the games--I was back in the US for the 2006 final when France lost to Italy, so I can't attest to businesses closing for that game (and the Zidane debacle!).
My only advice is to get to the pub/bistro @ an hour before the games to get the best seats. If you can make reservations, even better.
You're going to have a blast!
