World Cup July 19

So, I am not a sports person. I do know the World Cup is going on. I am taking my first trip to Paris and London getting into Paris on July 18th. An acquaintance noticed my dates and told be that France is quite likely to win the World Cup and that is on July 19th and if it happens it will be crazy. I couldn’t really tell if that was crazy in a good way or bad way!

I’m actually scheduled to go to Disney Paris that day. I like the idea of being there for a big celebration but will I have trouble getting back? Should I switch my Disney day because it will be exciting to be around everyone celebrating? Or a total mess as a tourist?