From my understanding, you can rent these from any of the hotels on the main lake near the Magic Kingdom. You can also rent them on a smaller lake next to the Carribean Beach Resort. I think they are about $20 for a half hour and maybe $30 for an hour. From what I've read on this message board, you can just go to the hotel and rent them. I haven't read anything about reserving them. We're planning to rent them for the first time on our trip in June. Hope this is a start and helps.