Contemplating going Cashless?

[Carwashmafia]

If remember correctly ... Mega seller Uncle Sam (now retired) giving me a "heads up" on a technicality of accepting cards on a Mega Vendor. The issue is when the selection would changed from the original higher priced & change would be given back in cash?

If a credit/debit card is used (customers can also use wash cards) The Mega Vendor will give customers a credit for the highest item sold in the vending machine (which is a $10 wash card for us) with no change and will charge their card for items purchased.