Does anybody have 1st hand experience booking a cruise like Norwegian using Chase UR and would you still get 1.5x for using points? Also is it relatively straight forward - we already have a reservation with NCL, would they be able to apply all discounts that we received and honor the same prices. How quickly does the booking show confirmed on NCL's side once I do this?

Also similar to airlines, do we have 24 hours to cancel without penalty?

Thanks