Hi!
Wow! it seems that it was more a torture room than a trumpet exhibition.
I sincerely don't know how one can try an instrument in a room full of people with some playing nearby. I did it once in a classical guitar event in Montreal and didn't like the experience. And it also didn't help to appreciate the instrument because of the noise, the bad acoustics, etc.
To me, testing a new instrument is an intimate process and people around are disturbing it, even if they are just listening. Moreover being in a room with a decent acoustic is a must.
My 2 Canadian cents
Stéphane