We rent a car at the hotel. This way depending on when your flight comes in, you can do stuff on your own. We got a hotel on Priceline in Port Canaveral. We like to stay close to port. Then you can get up and get to the port when YOU want to. I like to get there pretty early. Rather wait there than the hotel. Our hotel is pretty close to the port. Will drop our car off at the rental agency, and they'll take you to the port. Then they'll pick you up as well when you return and take u back to their agency. You can rent and get to the airport when you want. If you have time, you can visit Kennedy Space Center, WDW or the beach. We're leaving the day after we get in and plan to visit WDW again.
If you go to biddingfortravel.com, they'll give you hotels that you can get when you bid. This way you know what you're getting before you bid.
Much cheaper this way! Got a hotel on our last night for 50.00, normally 185.00 per night. Got a pretty good deal with our hotel the night before our cruise as well.
Any questions, feel free to email me.