Chris, I don't know about most people but if I had to choose between 2 shows that had the same vendors at both shows I would be choosing the first show. If I was a vendor and I had to choose between 2 shows due to time constraints I would be picking the bigger show. Some vendors are traveling a few days to get to the show and can't spend a week doing nothing while there are live animals back home that need attending. With your behaviour you're dealing yourself out of the "empire".
Right now you've put yourself in the position of second place and gaining the reputation of whining because life isn't fair to you.