Just back and bloody relieved. Two couples and we both have children around the same age - 7 to 10. Other couple's children were just a PITA throughout the holiday. Huge tantrums if they didn't get ice cream/sweets/toys in any shop we went into, tantrums and sulks because they didn't like the beach/funfair/swimming pool, allowed to stay up until the adults went to bed every night whining, interrupting the conversation, wanting something else on the television.
Our friends just gave into them all the time. Not only was it then difficult to tell our children that they couldn't have more sweets or another beachball or a second coke in the cafe; or to make them go to bed at a reasonable time when the other kids were allowed stay up until midnight; they also spoiled so many outings with their sulking, whinging to go home, refusing to take part in stuff etc.
We normally get along fine with these friends, although I always found their children a little bit spoiled and whiney. But I really had no idea just how badly indulged they are, and I found myself getting so exasperated with our friends for constantly pandering to this behaviour.
Other couple are already talking about going away again during half term; AIBU to resolve never to go away with them again, or at least not until their children are safely grown up and planning their own holidays.