We relax by not rushing. We don't set an alarm, but we keep the curtains open and let the sunlight wake us up, just like home. Also the room is very important to us and we always splurge on a nice one as we do spend a lot of time in the room. We go by how we feel that day. We have done 3 parks in 1 day and have also called it a day at noon, gone back to resort, to the pool have a drink take a nap and a bubble bath then go out for a romantic dinner.
I think it's important to listen to your body and not a schedule. If you really feel like sitting by the pool with a frozen drink or going back to your room for a nap and to put your feet up that is what you should do. You can't be a maniac every day......that is not a vacation.