Depending on the times you go, you can plan to "power" visit one trip, and relax the second one, or vise versa. It is neat to casually walk around and see things you missed when you were in a hurry to get to the big attractions.
Last visit, I walked around the lake where YC/BC, Swan-Dolphin and BW are. It was fun to check out all the lobbies and pools, thinking about where I might want to stay some day.