With all respect to your eagerness to dive, I don't think you have a realistic point of view about diving. There is a lot of information you need to know before you giant stride your way off the boat and into the ocean. To answer your questions--if you plan to do the Discovery Dive on repeated days, you probably will go to the same site or another equally shallow one. I really don't think anyone will take you on a two tank dive without being certified and with very little knowledge of diving. You definitely will not be going on a night dive and if you go on a night snorkel, find a shop who will take you for safety reasons. Please don't go alone.