I've sailed out of Baltimore on several ocassions and it has always been a pleasant experience. Our sail time was 4:30. Can't remember what time I embarked probably about 11:30, just enough time to have on board welcome lunch before cabins were opened. Are you parking there? If so, they will direct you to the parking area and it is just a short walk back to the terminal. There is a separate area inside to the right that is sort of like a private lounge that had a VIP sign on it. Let me know if you have other questions.