There should be hotels available farther out from the city center. But you'd have to take the bus or a cab to downtown. You might want to get your badge ASAP. Game pre-reg starts in a few weeks. Same some space on your schedule and get some generic tickets. If you're interested in True Dungeon or RPGA games those tend to sell out fast.
There's lots to do. People can spend hours just wandering the dealers room. There's also a 24 hour anime room and nongaming activities at night like a dance.
I agree with the idea to look for a roomate on the GenCon Forums if you want close in at this point.
Mike