I am taking my family of 12 (my six kids aged 15-24 with spouses)during Cmas break and have the AI plan at Hotel Coz. How can we save on transportation costs, etc.? We all want to snorkel and some dive (one certified, open water). What would be the best bang for the buck as far as snorkeling and diving? or at least one excursion that we should not pass up? We all will be taking our own snorkel gear. I have no idea cost to dive, snorkel, or take a boat to the Playancar Reef. What is the cheapest way to get around, etc. Are there group rates for anything? Thank you for your help!