When are you going? We have a reservation for 5/24 at 8:35...but I'm guessing we won't last that long to be able to eat that late...but it was the only day we could get and we might take an afternoon nap to be able to make it.
So....there is probably a 50-50 shot of me calling at around 7 to cancel that 8:35 reservation. If you really want to take a chance, you could pop over there and see if it is available. Of course, as a pp said, that is a long way to go for the chance it might be available. But if you are staying at the Poly, it is probably worth checking out. You could also try calling each morning or afternoon & see if anyone has canceled. That way you don't make a trip for nothing.