We were at the yc last august and the pool was open till 10 or 11pm, maybe later. We used it alot at night because it wasn't crowded at all, and was plenty warm enough. I did not see a play ground. There is a beach by the bc, but I don't think they allow swimming. The child section of sab is all sand and is like being on the beach, except better/cleaner. There is a map under resort maps.