If a parent was an alcoholic or drug user would that be enough to get a RO? Can an RO have conditions, like can not be alone with the child, or parent needs to have supervised visits from DCS or whatever it's called there?
No, a parent cannot file for a restraining order simply because the other parent is an alcoholic or drug user.
If there is a problem with that, and there is already a family law custody order in effect, the parent should file for a modification of the order which provides for specific visitation orders regarding custody to be requested.
If there is not an order in effect regarding custody, then a new case has to be filed. The documents allow for particular requests to be made and for the petitioner to attach a declaration explaining why the visitation schedule should be limited to supervised visits.
In California, the court appoints an investigator to meet with the parents and speak with the children, neighbors, grandparents, etc. so they can file a report with the court to assist the judge in making their decision.
The couple may also be required to go to mediation services where the mediator attempts to help them come to an agreement as to what the visitation schedule and stipulations (rules) should be.
Just because a parent claims a parent is this and that doesn't make it so. The court needs proof that the parent is a danger to the child or that it is best that the child spend the majority of their time with a particular parent.
Yes, the court may grant temporary orders for supervised visits while the allegations are investigated. However, if they are serious enough, the parent should file a report with the police or sheriff's department.
Restraining orders as in protective orders are to protect children from physical danger.