I work 3.5 days pw in a school, so am hols when the kids are. My DH never takes time off work during hols to do family stuff or take the pressure off me having to entertain them every day, with the exception of summer hols.
Most of my friends' DHs take a day or two most hols to do stuff together.
He has plenty of annual leave and often carries up to 10 days over to the following year. So, in reality, he never uses up his annual leave. He says he is too busy to take time off.
Should i accept that he just isn't that fussed about spending time with all of us? He is happy enough to take a day off on my day off, as the kids aren't around and we can spend the day in bed...his suggestion, not mine!