Ew, no. That's horrible. The company I work for does a lot of shows. I generally do about 22/year. A common range is 9am to 5pm, but 10am to 4pm is not unheard of. 8am to 6pm happens from time to time and feels really bad. I think out of 60ish shows that I've done only one was 7am to 7pm.
Yeah the best ones are 11 to 7. No one wants to network at 8 am before a bunch of keynotes and presentations. Lunch and after event mixers are the best.
7 am to 7 pm was terrible. everyone was sleepy in the morning (pre caffeine) and completely worn out by the happy hour/closing time.
