A first year of a show is typically the toughest. Marketing is the absolute key to a first year show... and even then it can be only a minimal turn out. Sorry it was a bad expereince for you ... but I bet the next time you want to do a show you will ask how many years has the show been in existance. It also tough for an established show to change a date. So when you inquire ask how many years at that date .. say first weekend of may or second weekend in Nov or when ever the show is scheduled.
The date had all the right things going for it... Just before a gift giving Holiday ( Mother's Day) . Too bad there were not some outdoor events and vendors to get people into the show.