I will be spending 5 days on St. Johns in a few weeks. I would like to do a snorkel trip w/ a visit to the Willy T for lunch. Where do I find a private trip or are there excursions available that somewhat follow this itinerary? I will be staying at the Westin if that help? I figured if I asked the concierge there I would end up on a trip with 15 other people I kind of wanted to do something on a smaller scale.