My cousin and I are thinking about staying at Pop for 2 extra days and going to Universal and/or seaworld. I'm thinking it would probably be most economical if we rented a car, but we're both only 21. We'd probably pick the car up at the airport (we'd go along with 2 friends who probably won't stay the extra days). I know it can be difficult to rent a car if you're under 25, I found a site that said that Alamo and Dollar will rent to someone who is 21. Is that accurate, has anyone under 25 ever rented from either? For that matter has anyone rented from them? How are they? What about the extra fee? How much is it?