SeaWorld/water park crowds at Easter

[Tinkjon]

Unless I'm doing something wrong, the historic wait times on here don't show SeaWorld or the water parks. I'm trying to put together a plan for Easter and wondering about two specific things:

1. SeaWorld has always seemed fairly quiet when we've been before - does this mean is it likely to be manageable on a Saturday or Sunday in April? Or will it be as bad as the Disney parks? (nb. not over the actual Easter weekend, just on general weekends).

2. I know that the water parks will be very busy over Easter. If we go to one on a day when it's the least recommended, I'm wondering how bad it will be. Is it possible to find loungers if you arrive after opening? What sort of times are you queuing for the big rides? Do you have to wait ages for a tube/float thingy for the lazy rivers?

TIA!