Question Author
Havinmysay, he doesn't work weekend and I'm sure my prents would take the girls if I asked them too, but I would hate to ask them. They make it quite clear that while the adore the girls and love spending time with them, it's when it suits them and like I said, they only make the offer of an overnight 3 or 4 times a year. His parents aren't an option because his dad's dead ( guess he's off the hook then) and we haven't spoken to his mum for years.
Sorry, I don't normally moan this much, just feeling a bit sorry for myself tonight.
Thanks for your answers,everyone- you've been great.