For starters, I'm not sold on the 'hidden resort' concept without some idea of its location, origin, and staffing plan.
I'm not sold on it either. Even if true, it hardly matters, since the elites sent on this 'vacation' are never heard from again. They might as well be dead, as far as history is concerned. Richard likes the theory because it means that life as a VIP is not as hazardous as it seems.
The mainline conspiracy holds that Paul met his death in 1966 and was replaced by the talented imposter we know today.
Jeanna Dysart, writing at Quora, says the problem with this scenario is that Bill Shepherd, aka Billy Shears, was a moderately well-known studio musician in his own right who was active in the '60s and '70s, and he looked nothing like Paul McCartney.

Of course this can't rule out the possibility that there was some other Bill Shepherd or Billy Shears, or other Paul double, who was pressed into service. If indeed this conspiracy is real, it begs the question of who implemented it, and why? Which leads back to the same rabbit hole we were in already, wondering what powers & principalities were behind the Beatles phenomenon.
I'm drawn to the Billy Shears material for the same reason as Mary Vary Baker's. (Got a thread on that somewhere?)
Judyth Vary Baker? Not up until now, but I found some old email notes that I posted to our JFK assassination thread.