Maybe have a friend from the U.K. book rooms for two couples if you are going at the same time, then just pay them back? I would think that could be done. After all, a lot of room switching or sharing tends to take place with this group anyway.
Might have to be registered to at least one of the people in the couple with the U.K. passport. Then you would be listed as their guest, regardless of where you came from. Nobody does a room check after.
Because of the double standard wife decided on another resort this year. I am bummed but I told her next year its my choice and Temptation it will be.
Just checked out Kenwood travel vs. Trip advisor.... hotels click is nearly £300 cheaper for a week in March than kenwood and as it is .com rather than .co.uk I would presume they don't have the same restrictions on passports.....
I did a search via TripAdvisor: Read Reviews, Compare Prices & Book for Temptation..... put in dates and they listed hotels click as cheapest.
Trip advisor seems to be pretty good for the best deals.... £750 for a week in May but via hoteling instead....