- *Save Up To 40% Off During Summer On Sale At Princess Cruise Lines! Guests Can Enjoy $1 3rd And 4th Guest Fares On May-december 2018 Caribbean Cruises. Discount Applied At Checkout (After Room Selection). Valid Through 4/24! from Princess Cruise Lines, Ltd.. Coupon Code: No Code Required. Price: Not Specified. Discount: 40%. Categories: Trips, Sponsored. Coupon Rating: 4.4 Stars out of 5. Store Rating: 4.5 Stars out of 5. Coupon Recommendation: Recommended. Available Until: Apr 24. Thoughts: Deal Score 55 out of 100.
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