I'll answer my own question...since I went to the Texas guitar show at the Marin Civic Center in the San Francisco Bay Area this weekend. Admission was ten dollars. There were 45 (my guestimate) booths. Most had used guitars, there was a handful of booths with parts, accessories, or new hand built guitars. You could probably see the same number of guitars by making the rounds to six or seven good guitar stores if you live in a larger city, but it would take you all day to do it. I was able to check out everything I wanted to within three hours. The crowd was mostly middle aged white guys. The ambient noise was quieter than at a typical guitar center on a busy day thanks to most players being considerate with their levels. The available instruments were appropriate for this crowd, there weren't many wildly colored, oddly shaped shredder's guitars. There were lots of gibsons, fenders and martins of all ages. A few oddities were spotted. Remember Travis Bean guitars with aluminum necks?
The best part was that one could play some very nice vintage guitars without having to ask a salesman to get it out of a glass case and having
them hover over you nervously while you try to hear it over the teenager playing Van Halen licks at the other end of the store. This made it worth the ten dollars and three hours I invested.
Amazingly the only thing I bought was a bootleg DVD that compiled all of the Beatles promos and many of their TV appearances. Finding this DVD was worth it alone.