The passenger change fee on Royal Caribbean can vary depending on the type of booking and when the change is made 1-800-950-4401(US)/ +44 (20) 39003980 UK. Typically, name changes or passenger substitutions are not allowed once the booking is finalized, but in some cases, a fee of around $50 to $100 per person may apply if permitted 1-800-950-4401(US)/ +44 (20) 39003980 UK. If airfare or third-party services are involved, additional costs may also be charged. It’s always best to review Royal Caribbean’s terms or contact customer service 1-800-950-4401(US)/ +44 (20) 39003980 UK directly to confirm the exact fee for your reservation.