Thanks for the input. I think I am going to stand my ground on this and just let my ex know that when I have custody, she will need to let me know what is going on and ask my permission before making any plans with the kids.
That would be the approach that I would take.
Another idea, would be to put together a monthly parenting calendar (maybe using MS Excel) that is exchanged monthly. If EITHER of you wanted or needed to change, then it can and should be communicated a month ahead of time.
"The difficulties of Life are intended to make us BETTER,not bitter". "Fear is a prison, where you are the jailer. FREE YOURSELF!" "Life is usually all about how you handle Plan B." - Jack3Beans