We stayed at the Plaza Resort in the Spring of 1998. It was new then and offered very reasonable rates for an enormous room that had fantastic views. The afternoon dive boat would always go to a location where we could snorkel and we got to do that for free! Even snorkeling from the shore during the day at the resort we spotted a few very large lobsters trying to hide under a ledge.
We also went on a one day excursion on the "Woodwind" for a sail, snorkeling and beach barbeque that was great.