I noticed admission is cash only. How about the rest of the vendors and food?

Box office is cash only but you can buy online w/credit card. Most vendors take credit cards. Food tickets are cash only in $5 increments.

can you go if not vacisinated

Food and alcohol are tickets, the trinkets wether clothes or jewels are cash or card. Although the rides are cash minimum $4 per person. There is an atm at the faire though if your low on cash