Need to be able to give a cash discount (or pass on Credit card fees) to patrons that want to pay in cash.
Right now it's legal to pass on Credit card surcharges in 47 out of the 50 states.
In Colorado, for example, a merchant is allowed to pass on credit card charges paid by the merchant, as long as the surcharge reflects the merchants costs, is plainly posted at the point of sale, and an itemized receipt can be generated that clearly shows the amount of the surcharge.
Obviously, this could potentially save film festivals of all sizes hundreds or thousands of dollars annually. And all we'd need is the ability to have pay types for each ticket that would specify whether a given ticket or pass was being paid for in cash or credit.