ok Im late but I went to the Gateway BMW GS Challenge. sort of a a mini training competition, cookout, etc appreciation weekend that they do annually. I have done this before, and they are a quite fun crowd. they do have a reserver order I believe, first people whom bought bikes from then then other BMW riders. then others generally. yes they are not completely exclusive.
I didn't actually buy my bike with them but have been a couple of times. any rate here is a short video summary of it if you find it likable. (mind you I am not a good video guy)