Washington DC Dinner Cruise. Enjoy delicious cuisine and live entertainment with a view of Washington, DC on this 3-hour dinner cruise along the Potomac River. On board the elegant Odyssey cruise ship, choose from one of three exquisitely decorated glass atrium dining rooms or head to the open-air observation deck to admire the view. Dine on a delicious 3-course meal, then dance the night away or see the famous sites of the nation’s capital — like the Washington Monument, the Lincoln Memorial, Reagan National Airport and much more under a moonlit sky. Book and Save 25%: Washington DC Dinner Cruise.