A lot of places like that now have debit, or bank card. I have bought a saddle with a credit card in this type of venue, and certainly like to bring a few hundred in cash. Most places will have atm machines as well.
I wouldnt bother with cheques, don't think any travlling horse expo would take them.
Btw, I find you can get a lot of good deals in the afternoon of the last day of the event. The vendors would rather sell than pack it all home again. Big item prices arent set in stone, you can often haggle a bit over what to pay!
Last edited by Skipsfirstspike; 02-19-2012 at 08:49 PM.