Thanks! The water wasn't horrible, but there's definitely some motion to the boat ride. I didn't see anyone get sick, but I'd say taking a bonine before bed the night before, or right when they wake up, would be a good idea. The boat moves quickly so it sort of bounces across the water. We didn't use the lockers, so I don't know how big they are. I'd assume they are probably up by the spa, since I never saw them and we didn't go up there. I definitely would have felt comfortable using them, however, if I would have wanted to ditch my stuff so I could go in the water.