Ok, some thoughts about how things could be improved at shows...
(None of this applies to you Howard because I don't think you're guilty of it)
Exhibitors
1) Don't play 'wanky' music - namely, audiophile 'tinkly-tinky' crap that no-one except total geeks listens to, or repetitive compilations of pop nonsense you've made up for the show.
2) When a punter asks you to play a CD, do so with a smile and show willingness instead of grudgingly, with a scowl, thinking to yourself: "Oh no, my uber-revealing audiophile pap which trashes anything other than pristinely recorded test discs is now going to get shown up by some 'real' music."
I'm exaggerating of course (well a bit!), but remember that people can only judge how good your system is with familiar music, so no matter how dreadful you think their music is, let them play it!
3) Take absolute care in setting up your system, showing the same fastidious attention to detail that discerning people attending the show are likely to do with their systems at home. That means neat and tidy cables, using proper hi-fi stands, not plonking your gear any old way on hotel bedroom furniture, and most importantly of all, employing the use of good quality mains leads and mains blocks which do something to address the awful mains supply in hotels.
If you're really good you'll use some kind of mains regeneration device to help clean up the supply. Do this and you'll have a fighting chance of making a decent sound, providing your equipment is worth listening to in the first place.
4) Try to suppress the urge to forgo all of the above, dumping everything and setting it up any old way, so you can be first at the bar
5) Unless it's a closed ticket only demonstration, make sure the door to your room is open at all times. There's nothing more intimidating than being faced with a closed door, opening it tentatively feeling you might be disturbing someone, and then being greeted with a stern look by a po-faced exhibitor because you've disturbed him in the middle of a pitch. Keep doors open and be smiley and friendly at all times. You're always going to be 'disturbed' by someone at an awkward moment; it's the nature of the beast, so accept it with a smile.
6) Always make sure that you have brochures/leaflets and up-to-date price lists of everything you're demonstrating, and that there are enough of them, laid out neatly on a nearby table. If you're professional and organised there is no excuse not to do this. People like to have something tangible to take away with them and refer to afterwards. It might help you make that sale.
Punters
1) Don't ask inane questions and waste the exhibitor's time. If you're lonely and have no friends go and find someone else to annoy.
2) Always bring a couple of familiar CDs which will help you judge what you're hearing and don't be afraid to ask the exhibitor to play them. What you get out of the experience is largely down to you.
3) Make sure your mobile phone is switched off before entering a room. It is ignorant to have phones ringing or bleeping during a demonstration. Oh and above all try to have a bath or a shower before coming - B.O is even more off-putting than bleeping phones.
4) Don't wait until the last minute to get to any particular room. Try to arrive at the show early so you have plenty of time to visit all the rooms well within the set timescale, particularly on the last day of the show. The last thing a tired exhibitor wants is people arriving in droves at 5pm on a Sunday evening when all they want to do is pack up and go home. Show some respect and common sense.
5) Don't forget to bring a credit card with you because the car park attendants at shows these days often don't take cash, and this fact is often not very clearly advertised.
6) Don't moan like an old woman about the cost of food and drinks - you're in an airport hotel of a large city that's playing host to a captive audience - what do you think is going to happen? If you can't afford to eat and drink there bring a packed lunch.
Above all have fun!
Marco.