I went to the Eastern meet in Carlisle without my car last year, and can honestly tell you that it was a great decision. Not once was I made to feel like I didn't belong, or left out of any activities. We didn't go on the cruise to the hospitals, but we literally just pulled into town about 15 minutes prior to the caravan leaving & we didn't know anybody yet. I'm certain if we had been there a couple of hours earlier, someone would have said to jump in their car. As far as taking my regular car to the fairgrounds, it was no big deal, we were able to park fairly close to the group (second day was better, because by then we sort of knew where we were.)
So get off the fence, enough people here will know you & you can always hop in my car if there's an event that includes some type of caravan. (so this is about the 15th time I've told you now, lol)