To change a Royal Caribbean booking in 2026, the process depends on how you originally booked. If you booked directly through their website, you can log in to the "Manage My Cruise" portal using your reservation number and last name. From there, you can often modify your stateroom, add guests, or purchase add-ons like drink packages. However, for significant changes—such as switching ship dates or changing the primary passenger name—you typically need to call Royal Caribbean's resolution department or use their online chat feature. If you booked through a travel agent, that agent "owns" the booking, and you must contact them to make any official changes to the itinerary or fare. Be aware that in 2026, most "standard" fares involve a change fee if modified after the final payment window (usually 90 days before sailing). If you have a "Non-Refundable Deposit" fare, changing the sail date or ship will result in a change fee per person, though "WAVE" promotions or Cruise with Confidence-style policies may offer more flexibility depending on your specific booking tier.