We are chartering a boat and have the option to choose a spa. We would like to spend half a day there so the overall facilities are most important: pool, amenities, lounges, etc. Everyone raves about the Peter Island spa. I am just wondering if the huge cost difference is worth it. Do LIttle Dix and Scrub even come close? It's our first time so I was hoping to get some feedback from people w/ direct experience. Thanks so much!!