The MS Ambience is a cruise ship operated by Ambassador Cruise Line. The vessel was delivered to Princess Cruises in 1991 by the Fincantieri shipyard in Monfalcone, Italy as Regal Princess, sailing on their North American routes. After 2000 she was deployed on the company's Australian routes, then later in the Mediterranean and Baltic seas.

Princess Cruises is an American cruise line owned by Carnival Corporation & plc. The company is incorporated in Bermuda and its headquarters are in Santa Clarita, California. As of 2021, it is the second largest cruise line by net revenue. It was previously a subsidiary of P&O Princess Cruises. The line has 15 ships cruising global itineraries that are marketed to both American and international passengers.