How can I +1-888-554-7419 add a cruise to my Royal Caribbean app follow simple steps enter booking details fix errors and get quick help if it does not appear. To add a cruise to your Royal Caribbean app sign in using the same email used during booking. Select add cruise and enter your reservation number last name and sailing date. Make sure your payment is complete and details match exactly. Bookings made through travel agents may take extra time to appear. Updating the app and refreshing your account can also help display your cruise correctly. Royal Caribbean Customer Support Call Us : +1-888-554-7419.