Can’t help with the concierge but we just went out of Galveston last month.
We did not know that
DCL will pick you up a day before at the airport. They take you to a hotel , pick more people up the day of cruise at the airport. We saw them down at the luggage pick up they were waving hands easy to spot. This was at Bush airport.
Since we didn’t know they did this we came in the day before and took an Uber from the airport to the Port where we stayed at Harbor House right at the Pier. It isn’t the cheapest place but it was nice to see The Magic in the morning. Close to walk to restaurants and downtown.
We even walked to the ship from there it took 10 mins . There is a side walk the whole way. They do have a shuttle from the hotel to the ship too.
Then we took DCL transportation back to the airport. We did have confusion here. We are Canadian and the lady directing the buses told us international flights go out of C terminal but we knew Air Canada goes out of A so we asked the bus driver to take our luggage off there, another family did too. We were right. Maybe going on another airline goes out of C but all signs said it was A too. He had to stop there to let others out so we just followed…lol