Not sure if Kemba and AJ will play again today, but I'm guessing they will. I'd keep an eye on Borges/Amore's tweets or tweet the question at them. It's how I discovered Kemba playing yesterday.
Andre Drummond is on one of the teams playing today, but its not certain he's playing. I think he will, though. Why not? They finally updated the league website with the 2013 schedule...check the past games to see the top performers, that's a good way to see who has who.
They only opened half the bleachers yesterday, even with Kemba there, despite opening both sides during the week. You'll have no problem getting in if you show up for just the second game. Gym capacity is 2,700. There were probably 800 there yesterday.
And yes, it was free to get in.
Not sure if I just walked into the right doorway or if they aren't charging. It's hot in there, but not oppressive (they opened the doors at one end and had lots of fans running).