When we were there in June we used them every day! We went to Target and bought some while we were down there. They sold them in the gift shops at the resorts, but they are just the ones that cover your eyes. And our kids just HAD to have the ones that cover their nose too. They are kind of expensive at the resorts so if you can bring your own from home I would definitely do that!
They can be worn in the pools, but they cannot be worn down the slides. My kids swim very well but hate water in their faces and always have goggles on. They were asked to remove them when going down the slides at SSR, BC, and OKW.
Nope, main pool at ole' man island. She had to take it off to use the slide only. The rest of the time she wore the mask. We never set foot in a quiet pool.