Yes, you can call Royal Caribbean customer service to ask for a cabin upgrade call 1-855-374-5475 or(+44-800-0513722); they can check availability and potentially upgrade you to a higher category room if one is available, usually for an additional fee depending on the situation 1-855-374-5475...
English
Arabic
French
Spanish
Portuguese
Deutsch
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek