What do you mean? I know people whose exes take weekly drug tests in order to see their child. Enforced by judge’s decision. If he doesn’t take a test or it comes back positive, he doesn’t see the kid. I also know people whose exes only have visits supervised by social worker. Same with visitation days. You can’t make your ex exercise visitations, but you have rights not to give the child to him if he shows up at random times and disrupts the household. He could only have visits when court specified. Your court order would likely allow more days than just every other weekend, there will be a weekday but a specific day. Yes it’s enforceable. Not always easy to enforce but that’s true with everything.