It all depends on whether you reserve through the Florida office or contact the Scrub Island Dock Master directly to check availability. The Florida office will most certainly ask for credit card confirmation whereas the Dock Master will take the name of the boat and hold a slip for you.....I would call the resort directly and ask to speak to the Dock Master. It all depends on the time of year and the particular week you are sailing - sometimes the marina is completely full and sometimes it is nearly empty.........Don't forget to ask for your TTOL discount, which seems to be a seasonal discount.......:)