Yes, although if the other parent contest the decision they can petition the court for counseling to try to resolve the matter. Obviously it would be beneficial for all parties to resolve the problem without the intervention of a judge or court appointed social worker.
18 i think
See Link Below'Child Refusing To Visit Other Parent?'
see link
13
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see related link
age 18 see links
Generally, not until the child is 18.
14 years of age
See Link Below'Child Refusing To Visit Other Parent?'
When they are 16, that is also when they can move out if they have a good place to stay.
age 18 see links