If the stars had aligned properly I would be there with Cruzdude. Unfortunately I have a house full of company, so I'm stuck in Ensenada. I know they emphassied that the games would be like real NBA games with defense and such, but it sounds more like pickup games. Still, its a chance to get a basketball fix of some sort. Cruzdude is right about the buses. You can buy a day pass and go just about anywhere you want. They run regularly, and the bus schedules are posted at the bus stops along with which bus runs where.
I discovered the buses last year when there was some confusion between myself and Uncia03, who was my ride to the arena. I foolishly decided to walk to the arena. I seriously advise walking to the arena from the strip when its a 110 degrees outside. After two blocks my life started passing before my eyes, and I took refuge at a bus stop. Alas, I'm here to tell the tale.
Summer league is a kick, and as Cruzdude said, rooms are cheap. There are a million resturants from which to decide. If you can drive, I'd get a group together and drive down next summer. You get to rub elbows with the players and their parents on occasion, as well as the Maloofs, who Cruzdude and I had conversations with. It would be great to have more Kings fans there.