If we are going to have some sort of co-parenting, some ground rules will have to apply. IMO if a newly divorced person is to introduce a new boyfriend (not anyone) to there kids I sure think 2 weeks notice is a fair "rule". If something like that can't be respected or understood by her I will probably give up co-parenting and stop all communication eventually.
I think you will find the WW will do as they see fit. R-read what sandy writes - Pure selfish attitude. - She will see rules as controlling, so you are probably going to get no where, other that encourage her to break your rules to prove a point. You cant control her, so why try - let her crash down in front of the children... They will see it eventually and make their own minds up. The focus is you being the better parent - Learn from her screw ups and be the rock.
Previous username - Helpme123.. A name chosen at a desperate time..
Now Mr Brightside.. coming out of my cage, and doing just fine.