Fares per person start at €218 on Sapphire Princess and €387 on Discovery Princess. Discovery Princess is the cheapest per night, at €55 per person. Discovery Princess is the bigger ship, carrying 3,660 guests to 2,670. Sapphire Princess has the fewest guests per crew member, at 2.4 to 1. Discovery Princess is newer, built in 2022 against 2004, though Sapphire Princess was refurbished in 2018.