Sorry Maggie / Sandy - I was thinking more about the seasonal visitors than the permanent residents, for the same reasons that you and Phil have stated - if they have to travel elsewhere for cash they will spend it elsewhere, which is why I thought it might be a good idea for Arillas businesses to offer the service and thereby keep the cash in Arillas. It would also be a service that could be in place much quicker than a new ATM, thereby reducing the impact on businesses for the coming season.
But, from a residents point of view, I do agree with you that the lack of an ATM is going to cause considerable inconvenience, so maybe we should all adopt Terry's suggestion and start flooding the Greek banks with emails supporting it's reinstatement.