Guests sailing on Royal Caribbean's Mariner of the Seas may be able to take advantage of a complimentary carry-on luggage storage service for use until staterooms are ready for guests later in the day.

Royal Caribbean Blog reader Twangster spotted this service being offered on a recent Mariner of the Seas sailing.

Photo by Twangster

When the guests hear the staterooms are ready announcement over the public address system, guests are reminded to pickup your carry on stored in the theater.

We have heard of carry-on luggage storage options being offered on other ships, such as Empress of the Seas and Grandeur of the Seas.

Guests sailing on Royal Caribbean's Empress of the Seas might be able to take advantage of a new service to store their carry-on bags until their stateroom is ready.

The carry-on luggage storage service was spotted on Empress of the Seas current sailing.

Photo by Brian Robinson

Guests have the option of taking their carry-on luggage to the Royal Theater and leave their belongings there from 10:45am to 1:00pm.

Guests must reclaim their bags when they want to bring them to their stateroom.

We saw something similar offered on Grandeur of the Seas on past sailings.

Royal Caribbean is now offering guests on at least one of its cruise ships the opportunity to store their carry-on bags until their stateroom is ready.

Sue Watson from the All About Royal Caribbean Cruises Facebook group spotted the new service available on Grandeur of the Seas.

Guests can bring their carry-on luggage to the South Pacific Lounge on Grandeur of the Seas and have leave their carry-on bags there from 10:00am to 1:00pm.

Guests must reclaim their bags when they want to bring them to their stateroom.

It appears this service is designed to make things easier for guests in the time between boarding the ship and when their stateroom is ready.

Would you use this luggage storage service on your next Royal Caribbean cruise? Let us know in the comments!