nope, we still use one for two weeks at the fairgrounds. No, I don't want to buy a smartphone and a data plan for 10 days a year. If you can't manage to not lose a handful of reciepts how the heck would a business deal with cash?
I imagine they figured the loses from bad cards were acceptable given the circumstances. I can't see them imprinting and immediately running the card. In that case a dial-up swipe terminal makes more sense.
They probably aren't processing the cards at all yet. Otherwise they key them into a dial-up terminal, in which case swipe makes more sense, or key them into the insecure system by hand??? Little tougher on the cash flow but few people get upset if not billed right now ;)
The local grocery stores brought in a dial-up swipe terminal when they had the same issue. You only had one lane at the customer service counter for cards for a week!