Thomson will have their Thomson Celebration Cruise ship based in Dubai next winter. It can take around 1,200 passengers and will run one week cruises but bear in mind that some people may stay on for two weeks (different itineraries) and many may choose to do a cruise and then a hotel in Dubai.
Also note that I did think that Thomson were going to fly to DWC and not DXB adding that airport to MAN's destination list for the first time.