American Constellation deck 1 plan (Lobby-Restaurant-Crew-Cabins)

The vestibule is called the ship’s 5-decks high Atrium area (lobby level on deck 1) with an open-floor design. In the Vestibule area are also the ship's 2 elevators (accessing 5 of all 6 decks) and the self-service laundry room.

In the Vestibule's lobby level is also located the Ship's Office (starboard).

The glass-enclosed Dining Room (aft location) is the ship's complimentary restaurant with an open-seating arrangement and single-seating capacity. Among its features are classy furniture and luxury dining amenities. The dress code is resort casual. Dining menus are itinerary-inspired, with local specialties. Food is prepared by highly trained chefs using the freshest ingredients (many are locally sourced). Breakfast (7:30-9 am) is buffet-style and includes made-to-order items. Lunch (12:30-1:30 pm) offers soup, a choice of 3 dishes (often BBQ pork sandwich, pasta), chef’s salad. Dinner (6:30-7:30 pm) offers soup, salad, 3 entrees (incl fish, meat, and vegetarian). The wine list has a selection of domestic wines (available by the bottle or by the glass). Complimentary beer and wine are served with lunch and dinner. Water and soda are complimentary during meal service. Breakfast can be also delivered to your stateroom if an order form is put on the doorknob the night before. Lunch and dinner are both ordered at breakfast time. The next-day menu is posted the night before. Any dietary needs will be catered to. If you don’t like the menu items, you can always ask for something different. Two desserts (pie or cake) are always available, also sherbets and a variety of ice creams. Sweets are complimentary and available all day long. Refrigeration is available for storing insulin or other medications that require protection.

Adjacent to the Dining Room is the Galley (ship’s Kitchen).

Cruise cabins from 118 to 126, all of which are category AA-Riverview (outside staterooms each with a non-opening window). Room #123 (portside) is wheelchair-accessible (for disabled passengers).

Forward on Main Deck are located all the ship's staff and crew cabins.