We attend about fourteen shows every year, ranging from big radio control shows, regional static displays, local events hiring our pond and 'have a go' boats, museum based model shows, to full pyrotechnic displays. Some we contribute to the events costs by hiring extra tables and purchasing extra tickets ( both Yeovilton and Bovington would provide two free tables and five complementary tickets, everything extra you pay for. ), some we attend at our own costs, while some events pay us for either pond hire or pyro costs. Interestingly, we have been offered payment more often by the smaller events, in some cases very small events. Some shows provide all our table needs, while others provide nothing. It seems to be a more complex issue than initially suggested.
As far as show profits go, we may be under the impression that these events are money making juggernauts, but I would not be at all surprised if a small profit (or loss) is the norm for most events, once tent hire, staff costs, risk assessments and insurance costs are taken into consideration. Having spoken to event organisers over the years, I suspect the above is the norm, so it is, without doubt, a two way street. It may be nice to attend to these events, free of charge, but we all have a responsibility to make a show work. so bring your most interesting stuff, smile and engage with the public, keep the coke cans and sandwiches off of your display areas ( I have the photos, don't make me put them up, fellow clubs! ) and make sure you promote the hobby to the best of your ability. ( I would suggest throwing a towel over those members caught sleeping on stands! ).
A question for the oldies, Did we have model boat specific shows back in the seventies and eighties? I can only remember multi discipline shows like Sandown Park and Plumpton.