I also thinks it’s probably a wind-up, but if not, Bowwow is trying to live beyond his means. this is what it costs. You want to get it for less and this makes you a ‘schnorrer’.
I was a guest once at the Homowack and after Shule, they announced ‘everyone is invited to the Kiddush’. I was thinking that means someone could stay at a cheap motel nearby and come for the davening and get the basically lunch for free.
But here it’s a much different story. the caterer invests heavily in putting together the program, advertising etc. and has to sell a certain number of rooms etc.
You can certainly ask if you can join the minyanim, but his not allowing it does not mean anything about his Kashrus.
You want something that others have to pay for, you want it for free, instead of making a vacation that you can afford, that is the ugly part of this story if it’s true.