The $50 onboard credit is if you select one of the rates for OTH.
Deluxe Ocean View: Size: 230 sq. ft.; Guests: 2-4 Twin beds that convert to king, Picture window - Private bath with shower - Separate washrooom with sink and junior tub - Safe - Mini Bar - Phone - Sitting area - sofa - hair dryer - Bathrobes
Cove Balcony: Size: 185 sq. ft.; Balcony: 45 sq. ft. Guests:2-4 twin/king, single sofabed or single sofabed and upper bunk,window and balcony, bathroom with shower; interactive LCD TV, phone, 110 AC current, individual climate control, hair dryer, safe, minibar, 3 closets, desk and ottoman seat, sitting area with sofa and coffee table.
Don't miss a chance to enjoy this great ship and cabins.