We used Lyft from IAH to our hotel in Galveston, it was $103 total for two people including the tip on a Saturday leaving around 6pm. Our hotel was on the seawall, so then we got another lyft from hotel to port and that was $30 with tip on a Sunday at about 10am. They were fast to pick us up, but we definitely got hit with surge pricing on the ride to the port lol