I've attended many product trade shows over the years, and it is about picking up brochures at the various booths, that maybe of product interest to the company. More less, a day or 2 off from work. If flying, then maybe 3 days. Then too, it is about the various competitors and offerings. Then come back home and do some product investigations/reviews or not. Been retired since 2008.
Attending an Audio trade show, it would have to be in my neighborhood, as not my marketplace. I don't have extra $$$ to spend on higher end equipment.