How can I make payments on my reservation? Help Center Admin October 14, 2019 17:08 Updated Follow Payments can be made by calling at 1-800-474-2052, 24 hours a day, 7 days a week. Related articles When is my final payment due? What if I need to make changes to my cruise reservation? How do I book shore excursions through MileagePlus Cruise Awards What is Onboard Credit (OBC)? How do I pre-register with the cruise line? Comments 0 comments Please sign in to leave a comment.