Hello, Edena!
Hazen stands at attention, ready to work hard to make the Domain of Hope and the multiverse a better place. (I think he has his work cut out for him.)
Overall, I have had good experiences with the RPGA. I have several friends who are members as well. Last Gen Con, I played in an event where most players had at least a decade of gaming experience. I have also enjoyed several other events.
True, I have had some negative experiences. I have had a few groups consist of so-so DMs and players who seemed to be vying for the weirdest character concept. (In some Living City events, my character stood out by being relatively normal and quiet.) However, in some LC and other events I have played in there were both good role players and strategists.
I think the RPGA is what you make of it. Are there a few people who will make you shake your head? Yes. However, there are good people in the RPGA.
Mind you, there have been support problems. I once played in an adventure run by a friend (who was impartial) where an encounter was left out of a module and was referred to a little later in the adventure.. My group was able to finish the adventure, but it did change the tone of it. (Yes, we should have been told something was wrong with the NPC. It would have made some of the reactions of the other NPCs more logical.
Ironically, we also had an offensive player at the event. His character was jovial, and swearing a bit. Normally, I would not mind but one of the players was quite young. (The offending player calmed down a bit but I would have hoped that the man would have had more discretion.)
So, my experiences have largely been positive with a few sour notes. I appreciate the hard work of the judges and the volunteers. As for the behavior some have complained about in other posts, I think we have to monitor ourselves a little. Or to use an old saying, if you want respect, you have to give it to others.