So a couple of things about Houston / Galveston.- Sorry about the long post, I hope it answers a bunch of questions.
1. Houston is Big, really big, and the airports are no where near the port of Galveston. Its an hour from either airport to Galveston.
2. Galveston is a beach town which means there are lots of hotels and they are dependent on the beach and cruise crowd.
3. Almost all hotels in Galveston will have a shuttle to take you to the terminal. So if you arrive on the 11th, stay at a hotel in Galveston and take the shuttle to the terminal.
4. There are almost always 2 boats in port on embarkation days so that is an additional 6000 people in Galveston trying to get thru the terminal. Its not a painful experience if you are prepared for it and you stick to your PAT. Make sure that if you have children you prepare them by talking about the noises they might hear, the things they might see, and how important it is to stay close to mom and dad. If your child is prone to melt down the terminal is where it is most likely to happen. There is just too much stimulation.
5. If driving to Galveston. There are numerous places to park your car close to the terminal. There are two lots right by the ships that seem to pull most of the traffic at $70+ per week. Drive right past those dudes and keep a look out for a better price. I have parked in a secure parking lot with fences and security cameras for as little as $40 per week. You might be thinking but those guys are not walking distance, never fear they too have shuttles. Trust me you do not want to carry your luggage at all if you can avoid it. The two lots right across the street from those ships make you walk. Its a busy street and you have a weeks worth of clothing, FE's and all of your kids stuff.
6. Bring tips for the shuttles and the terminal porters. $1- $2 per bag is customary. Its just my DH and I and we normally have 1 big bag, 1 medium bag, and 1 hang up bag. I normally give the terminal porter a $10 because I want to make sure everything gets to the right place. I found out last time that if you tip a little heavy handed here, the porters will walk your bags to the front of the pile-o- baggage. This means that the cruise ship staff picks the bags up first and they get to your cabin door earlier over later.
7. Getting off the ship is a snap, leave your bags outside your cabin the night before and they magically appear in the terminal the next day. You will have a ticket that will show you where in the grid your luggage is at. Grab a porter give him the ticket and he will show you where to look. Then he will put them on his trolly and take them to the shuttle for your transfer either to the hotel, airport, or to your parking lot.
8. Cruise Staff are very busy on the last day so they want people off the boat as early as possible, you might feel a tad rushed. Do your self a favor and relax, eat breakfast in the buffet and slowly head out. If you are handling your own luggage this is not possible. If you take your time there is less luggage in the terminal to look thru, more porters available, and don't worry you will still be off the ship by 10 am.