Hehe.
Quote
Anybody who plays bridge even half seriously should not be entering GCC events.
Good idea, but problematic. The majority of events are, afaics, GCC. The SO of a sectional, or of a regional with the exception of certain team events, has to put in the event advertising a statement that the mid or superchart will be allowed if that is to be the case. I don't think I've ever seen one.
As for clubs, lemme tell you a story.
Way back when I first started playing here (Rochester, NY), my regular partner and I decided to try Precision. So I asked the TD at the club at which we usually played "can we play Precision?" He replied "you can play anything you want." We never had a problem playing Precision at that club, btw. Some years later, partner moved, and I started playing with another player, at another club. There were some pretty good players at that club, or so it seemed to me at the time, and there was some "experimentation" among them (nothing earthshattering). So Dick and I decided to give Romex a try. Three months later (!) the director came to us and said "I understand you guys are playing a forcing 1NT opening". I affirmed it, he said "that bid is banned in this club" and walked away. I followed, asking why. He couldn't give a satisfactory answer, in fact any answer other than "because I say so". I did some research. It turned out that one of the club players, who had once been a bridge teacher, objected to the bid (not in our presence, but privately to the TD) on the grounds that "some players might have problems with it". Not her, of course, she was perfectly capable of dealing with it. So there happened to be a TD from another club assisting that evening, and he recommended that the bid be banned. Guess who? The TD who had told me a few years previously "you can play anything you want" at his club! Later, I asked him if Dick and I could play Romex there, and he said "sure, so long as you treat your 1NT opening as a Mid-Chart convention (it's GCC legal)". The club where the bid (and hence the system) was banned was not owned by the TD - it had a board of directors, and one of the directors suggested that we appeal to the board. I would have done so, but Dick died shortly thereafter, and I just stopped going to that club.
Bottom line: in clubs which do not publish their convention regs so everybody can see them (virtually all of them, in my experience), don't expect anything in particular from that club - decisions as to whether a convention is allowed or not will be made arbitrarily, on the fly. I daresay that even if you ask, the answer you get on one day may not be the same as the one you get on a different day, or from a different TD.
Note: do not take anything in the above as an indictment of the ACBL operation here on BBO. I have no idea what their convention policy is.