Most of the big resort hotels on the strip have elaborate swimming areas some with wave pools. sandy beaches, water rides and fountains. One note about these pools is that a lot of them close in the evenning because they want people in the casino gambling instead of by the pool. Some hotels pools have limited hours during the winter months or slow times. The Golden Nugget pool downtown even disappears during winter months when they cover it over and put a heated tent around it and it becomes a conference area. If you plan to use the pool a lot during winter or slow times check with your hotel for hours of operation.