A friend of mine wants to travel by car about the EU later this summer. Due to dietary restrictions, she wants to bring her own food in an ice chest rather than relying on local stores for things she can eat.
To keep the ice chest cool, she would need dry ice (frozen CO2). Is this something she will be able to find in various EU regions?
(No, I'm not sure which countries she is planning to visit. I think Germany, Hungary, and Greece were on the list.)