My husband and I are sports fans but do not get into soccer so the World Cup has little meaning to us. However, we are two people on the face of the earth and there are millions of people who love soccer. I think what Disney is doing is very good. The locale is perfect as Epcot should be appreciated for attempting to get others to experience a different country and culture X 11. Plus, it's not an outside viewing area so whoever wants to watch the games can sit down or stand up and enjoy. I don't see where the viewers are going to be ramping it up and yelling and cheering and disrupting anyone walking outside.
As for having other live sporting events, why not? In the same environment, I totally agree. Why not have a Super Bowl party? Have it at the same place and sell tickets to it. Other families can have a good time at Epcot without being bothered.
For the drinking thing, anyone can get totally wasted at Disney World 365 days a year. If a person really wanted to do that, they don't need a sporting event to get it done.