OK, so let me get this straight. Is this a "Swingers" charter of this Celebrity ship? Or is there a Swinger's "Club" that has booked a group of cabins on a regular cruise?
None of my business, but if the room is paid for, why wouldn't you just go solo and enjoy the privacy, especially if you will be with a lot of other like minded people.
. Unless, it is not a group cruise and you are the only swinger and want a like minded companion. But, 2 swingers does not really meet the definition of swinging does it?