We have been a lot for different games and I know this is such a general answer but it really depends on the day and who is playing at the time you are there. Majority of the time you will have no problem getting a seat at a table, maybe a very short wait, with the bar being a little more difficult. Last year, they set up TV's outside as well and we watched our game we were there for outside (no food, but they had a bar set up), it was awesome. However it drew a bigger crowd because it was the Eagles vs our team the Bears, lots of fans... We watched the Blackhawks take home one of their Stanley Cup victories there and had a huge table for our whole family. I think the time you are talking about going you should be able to catch a seat. We will be getting into the world on Friday and will probably be there Sunday night for our game! Good luck!
