I can confirm that all cabanas now need to be booked on arrival. I had to cancel my June 6th because, well, it's gonna thunder and I'm not paying that much to be at that park in thunderstorms. We tried to book for the 5th and they were not able to book any. They also said that if you're staying on property you can get into the park an hour earlier, which means that most people are going to be there early and do that. Frankly, I'm just going to go and see what happens. If I can get a Cabana in a location I like, then great, if not, I'll try the chairs, if not, I'll steak out a good spot and be there until I feel like leaving and go explore other areas of City Walk or Disney World. But yes, now you get them at the park. Seems a VERY silly practice.