Fun area for families, great places to eat.
A trip to the beach is a great way to spend an afternoon. Will probably be busy around the day of the wedding, but you can find street parking somewhere and walk a block or so to the beach.
Great place to learn a little about what NASA does, has lots of cool, interactive stuff for kids to do as well.
Great museum visit if you are into anything and everything about flight
Great waterpark on Galveston Island
Great place to go shopping and/or eat. Has an Ice Skating Rink as well.