Separated 3.5 years, STBXH won't agree terms re kids so not divorced yet 
Loads of issues come to a head recently, so I have stopped his access (my summer holiday period with kids just now anyway) pending visit to lawyers this week. He refuses to meet at lawyer but we are incapable of having non-lawyer agreement on previous experience.
I want to agree minimum standards for his alternate weekends:
DD11 and DS7 to have proper bed in a (shared is fine) bedroom - still sleeping on livingroom floor of OW flat 3 years on!
Reasonable bedtimes circa 9-10pm especially on school nights (often up past midnight and watching TV late into night so tired and grumpy at school on Mondays - teachers have commented)
No access to unsuitable videos / films (especially for DS7) well above age range
No access to unsuitable Xbox games well above age ranges.
I do not want DCs to not have weekends with him, but current situation driven me to end of tether and want to start afresh with clear (ideally agreed) rules in place.
What does everyone else do please?? Thanks