I see a lot of chatter about this on other forums, specifically IAP... but from a lot of the chatter, it seems like extra work involved... I may be wrong (not unusual for me), but seems that you don't get a receipt to give the customer, you still have to keep track of the sale items, you send a receipt to the customer via email, then you still have to do the accounting and banking... really sounds like extra work to me... plus I don't carry a cell, and a number of shows that I do, there's little service or my wife's service doesn't work (she carries a cell because her son gets an extra phone on his service and gives one to his mother).... I still use the old knuckle buster, I can write the items sold on the receipt, I have a copy to give the customer, don't need to track their email address for the receipt, then I enter the sales into my service at night (I use propay), wait a day until the funds are available, transfer to my account and I'm done... for a Saturday show I have funds in my bank account on Tuesday.
The one drawback I see on my system, I don't know if the card is bogus or over limit until I enter it in Propay... in the two years I've been doing CC's and all the years I've been doing shows, I have never had either a bogus/bad credit card or a bad check. (Hope I don't jinx myself with that statement)
And truth is, I rarely do more than 5 or 6 credit cards at any given show...