I put language in mine about getting to test him if I had a reason to suspect he was drinking. It wasn’t specific enough to actually use for anything, but it made it clear for my later custody dispute based on drinking that it was a known problem. I think it helped.

Public perception is kind of BS. Most places family law cases are not public. You can agree not to share the terms of the agreement if he wants to keep the drug testing a secret and you want it to be one sided so you can use it later.