Port Canaveral has car rental. The drive is about 1 hour drive. Pretty fast actually.
I think that it would be best to check their website cause I know they sell tickets for the day that way you don't loose time making lines and also you can check the schedule for some of the shows there. I hope that help!
Not recomended. You need all day to visit the park. You have to go from the cruise to Seaworld and to cruise again.
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