At 10 your son is still a little young for his wishes to be decisive in terms of his contact with his father if the matter goes to court.
In the most general terms it is after a child is 12 that his of her wishes carry more weight - and obviously the closer they get to 16 it is more leikely that their wishes will be followed
In any event the starting point is to arrange to discuss matters with your ex using Family Mediation
- preferably using a Mediator trained to work with young people so that your son's views can be heard.
It would be helpful if you oculd come up with some compromises (after all your son does have to accept that everything will not always be as he wishes)
For the midweek contacts perhaps he could arrange to take your son out rather than eating at home.
For the weekends maybe your son can be allowed to stay in his room with activities until his Dad wakes up
It will not be easy I am afraid - but if it does go to court then it will be some form of compromise which is most likely to be the outcome.
Please ask if you need further details