6:30...I was thinking the game started at 9:00?? During the day you could probably head to Buffalo Wild Wings on Franklin. They have lots of TV's and will probably have the game on. Crickets, downtown, will probably have it playing as well.
For the first game SA v Mexico this might sound kind of weird, but I think your best bet is Rudy's on 35-Valley Mills. There just aren't going to be many places with lots of TV's open at 9:00 in the morning in Waco, but Rudy's probably will be.
Hopefully that helped. If you need anymore info let me know. Go USA, hopefully Clint will represent Texas well.