I have never been to Galveston. But if Galveston is like the other ports I have been to, on embarkation day, you will enter the ship on the same deck where the main Information Desk (a.k.a Pursers Desk, a.k.a. Front Desk) is located. On the Carnival Conquest, the Main Information Desk is located on the "Lobby Deck". The Lobby Deck is the third deck from the bottom deck on the Carnival Conquest.