Please turn your caps off. Adventure is one of the ships we haven't been on but Explorer is a beautiful ship ans is the same class. You won't be dissappointed. Lobster night is generally the second formal night. We just got back from Freedom of the Seas & lobster night was the night after the second formal night. You never know. You can ask the wait staff in the dining room when you board & they will tell you. We are loyal to RCL & in my opinion they have the best service. Even though gratituity is added every time you order a drink, we always tip little extra (as you would in a bar) so that may help a little too. Have a great time. We always do!