Sarah:
Go on the Internet and check out the limo shuttle from Hoppy to Galvaston. You can reserve a roundtrip for two for about 50 to 60 bucks. My son and I are going 9/25 on Celebration and have shuttle reservations. They pick you up at the airport travel about an hour and drop you off at the pier. On return, you are picked up at the pier and returned to the airport. It worked for us in May and I expect no problems again.
Good Luck,
dan2004