At the price of the vacation, the cost of a bathing suit plus the small space it takes up in a suitcase is a no brainer. No matter where we go or when, we pack suits, weather can change, resorts have in door pools, other than Disney, so you're always prepared. We each take 2 suits, wear one while other dries, I hate putting on a wet suit, we use the pool many times a day during a stay, seems to me that the pool seems warmer after the sun sets, even during the winter, only problem is getting out the air is cool and the trek back to your room in the AC'ed halls is extra cold. Buy one and take it, you won't regret it if the weather turns warm.