I keep reading people posting this, and I agree tourism is up, compared to how bad it has been, but I've had no problem getting rooms, except on holiday weeks. How do you know the rooms are filled? When they start building the Legendary side of Pop again, I'll believe it. I also think with the price of gas, that many people who would normally drive may rethink their vacation plans...and a lot of people drive.
We were there during the Northeast's break, when all the warnings were that it would be packed. We didn't go in the parks on President's Day, but for the rest of the week, we didn't find it to be packed at all. I was really surprised.
So, are the rooms really filled? I've not seen anything to indicate that..and of course that is just my opinion.