The family pool is less crowded in the evening, but in the winter it can be fairly cool on deck at night. It's also often very windy then, as the ship is sailing & seems to often sail faster at night than during the day. The pool closes at 9 or 10 on non-Pirate nights, and earlier on Pirate night. Evening is an interesting time to ride the Aqua Duck, with multi-colored flashing lights around the tube, but it can be a bit chilly.