Thank you.
Yes, we do get the GAC and that is very helpful. I don't know what I'd do otherwise. 
As long as there are games and activities by the pool during the day, my daughter should be happy doing that. I'm hoping my son will be content just to swim. The playground is a possibility but I'm not sure it would hold their interest. Ping Pong definitely would, though. So would the arcade. For my daughter, anyway. My son is sort of a lost soul, poor love. He's very much on the go, and can be aggressive, and doesn't care to play by the rules in just about any situation. So he doesn't "play" in the typical way. I have to be careful and be right with him, because he could pinch, scratch, bite, hit or kick another kid. 
I try my best to keep him within reach for that reason. But if my daughter is engaged in games and activities, I can keep an eye on my son.