Minimum card spend.

GaleSF63

TheBanker said:

I have just been for a few days at the seaside (in the UK). Before I went, I withdrew some cash expecting to need it for small things like ice creams and snacks.

In fact most of the kiosks were card only, and I didn't go anywhere that insisted on cash payment. I have returned home with the exact amount of cash I took, and on Saturday went to the Post Office to put it back into my bank account. 

And that seems to be the sensible route. Cater for what might happen and don't get worked up about what does or doesn't happen.