We recently had dinner at the ESPN club on a Friday night, albeit later in the evening. But it was summer, so crazy busy. And there was a huge convention at the Dolphin. And Michael Phelps was swimming at the time. And we still only waited about ten minutes. I don't think you'll have much of a problem getting a table.
As for what's being broadcast, again, I don't think you'll have much of a problem seeing the game you want. There are a ton of tvs in there and they do a really good job about making sure that most, if not all, of the games are televised. And if, for some reason, your game isn't being shown then I would definitely try asking for a channel change. I don't think you'll be met with any resistence.
Have a great time!