craft fairs are a waist of time

How should I advertise the craft shows that I do?
The people in charge never seem to advertise like they promise. It really sucks when we put the effort to show up & set up our booth and nobody knows to come.
We loose a bunch of money when this happens. We pay for: gas to get there, food while we're there, a place to stay if it is far away. There is even a booth fee. The booth fee is suppost to pay for things like advertising.
If we sell a few things, part of that money goes to materials. We spend time to make the items and we also spend time to sit around and try to sell them. There is wear and tear on the items we sell, our vehicle, tent, tables, & us!

The people that do show up, don't seem to be expecting it... even if it is one that was highly advertised. They come to something like a craft fair or county fair and don't bring any cash. Do you really expect us to take credit cards? Do you go to a farmers' market and expect Billy Bob to accept credit cards?.. would you even want Billy Bob to have your credit card info? Crafters and Artists are usually very honest people, but you should be careful anyways.
Why would someone even leave the house without a little bit of money? Why would you leave your purse in the car? Why would you even get out of the car without your valuables? Why should we trust that your check is any good?

Accepting credit cards is a hassle. It includes transaction fees that the vendor will have to pay.

Maybe we should just sell on the internet and quit going to craft fairs.