@Cupoftea53 I don't think it's about waiting, we just don't have family who would be able to do this, and it's a big ask for friends all of whom have small children and jobs.
We have had separate occasions where we have been away on our own, though not since DC3 arrived (nearly three).
If I'm honest, I just don't think it's worth it, because frankly an overnight (unless for a wedding/ event) isn't going to touch the sides. I need a week in the sun being massaged, and waited on hand and foot with DH !
What I do fantasise about which is slightly more realistic is a night or two on my own at a spa - not having to talk to or be beholden to anyone. But then I think I would probably enjoy it in concept more than in reality !