We rented a car after our cruise with National. They are a bit away so they instructed us to grab a cab at the terminal (which was very easy). They reimbursed us $10 of the cab fair, which I believe was about $15 or $20 (can't really remember). We traveled around Florida a bit and ended up in WDW. We dropped the car off there at the Orlando airport. I know you could drop back off at whatever airport you would be flying out of. They are really flexible. We have used them every trip down.