?I wouldn?t be surprised if she didn?t turn up for the pick-up if she knew we were going away?
The very first time DH and I went away together, we were due to fly on a Monday morning, and DH was supposed to drop the children back to their mothers on the Sunday night. I was slightly concerned we were taking it so close to the wire, and (surprise!) we got a text on the Sunday lunch time, from the ex, saying that she was still away and could we keep them til Monday morning. Thankfully DH had anticipated this, and we dropped the children at the ex?s sister?s house (who is generally quite sensible about all this).
However ? after that, to negate any risk of future ?problems? I always insisted that the children (there were two of them at that time, DSD is now away at Uni) were taken back to their mothers at least 24 hours before we were due to depart.
I used to try and avoid telling the ex we were going abroad, because I know how spiteful she can be, but DSS tells his mother everything, and we never managed to keep it secret.
But in your case Origami, I?d be very careful to ensure you?ve got a back-up plan, ie that you can take them home yourselves, if you can?t rely on the ex to pick them up, and if you think she?d just depart anyway, leaving you completely stuck with the children, you?d probably be better taking them home a couple of days early, just to foil any little schemes she may have. And the less you tell her about your plans, the better (assuming the step children won?t drop you in it).