Royal Caribbean International is inviting vacationers to re-discover Europe this summer, and offering up to $400 onboard spending credit in March with its Europe Extravaganza.

From March 1 through 31, 2013, vacationers who make a new booking, six nights or longer, on one of nine ships plying European waters in 2013, also can enjoy an onboard credit to make their Europe cruise even more appealing.

During the month-long sale, new individual bookings made with deposit will receive $50 onboard credit per inside stateroom; $100 per outside stateroom; $200 per balcony stateroom; and $400 per suite. Guests can apply their onboard credit toward an exciting shore excursion or rejuvenating spa session, or celebrate a special occasion during their cruise with a specialty dining experience. Guests taking advantage of this offer must mention appropriate offer code when booking. Offer codes may be found by visiting www.RoyalCaribbean.com/EuropeExtravaganza.

The onboard credit is applicable to all 2013 Royal Caribbean International Europe cruises six-nights or longer, including cruisetours. Offer is available only in the U.S. and Canada and applies to all categories available.

All bookings must be made and the required deposit must be paid by March 31, 2013, by 11:59 p.m. local time to qualify for the promotion. Onboard credit is in U.S. dollars, has no cash value, is not redeemable for cash, is not transferable and will expire if not used by 10:00 pm on the last evening of the cruise.