Oh, I
absolutely have.
Here in Florida, Disney has an interesting "professional" relationship with many of them.
I'm friends with a few and am loosely acquainted with more.
Why do you think I made the joke about offering alternative premium experiences for spouses and significant others including such things as divorce attorney consultations a while back?
I immediately sent texts out when the news broke and the responses back were incredibly mixed. A few said they knew friends that had been saving since the original announcements without even knowing the cost so they could jump on it. A lot of them that aren't single can't get their SO to sign off on that kind of an expense for a one-time experience that nobody else in their family cares about* and a lot of them were not impressed by what was being offered but I'm sure some only take that stance because they know they can't afford it.
They've all done GE and I've made the mistake more than once of asking what they've thought of it (there is some weridness around Smuggler's Run I don't fully understand) so there is also some skepticism.
There are some that just aren't interested in this kind of LARP experience - they go to the celebrations. They have the costumes or they build stuff (or both) but aren't clamoring for this type of thing.
One said a whole bunch would be more interested if it were set during the original trilogy - same complaint many have regarding GE.
Of course, my social net and conversations are purely anecdotal. Perhaps your experience with others you know has been different.
I'm sure a good number of 501 will do this at least once (I have no idea what offical worldwide member numbers look like) but a whole bunch won't for a variety of reasons and despite how much that group is into this sort of thing it doesn't represent an endless supply of customers so after those who want to and can, do it, a lot about it would need to be dynamic for them to be repeat customers.
EDITED TO ADD:
These are people who complained about Last Flight to Endor being a shameless money-grab but then all paid to go anyway. Still, that wasn't a couple grand per person...
*There area few that seem to successfully on-board their kids but most who have kids seem to eventually make them hate it as much as their wives and girlfriends unless they're fully-vested in the 'lifestyle' along with them.