As far as I'm concerned, an addict is an active addict unless there is significant recovery (and all that that implies) time to say otherwise. Personally, I would choose NOT to take an active addict to a wedding. It seems to me like way too soon to be getting on a plane with someone who just put you through what he did, and someone you aren't on speaking terms with and try to accomplish business. How much could possibly go wrong vs how much could possibly go right?