Couple I know through friends went to Ibiza on a boozy holiday this summer (they are aged between 40-55). They have a DS who the grandparents look after frequently (i.e.
Most weekends). Parents both work so in the school holidays the grandparents take holidays from their jobs to take turns looking after DS. Grandparents wanted a holiday on one of the weeks that they were scheduled to look after child so they took him abroad as they would have had him stay over each night at their house anyway. So my AIBU is - if you were the parents of the boy - would you feel massively cheeky to use a week of your annual leave to then book an adults only holiday to Ibiza with friends for that week when you could have gone with the grandparents and had a family holiday with you DS?!