I'd second trying to avoid tapering and/or withdrawing in Thailand. The heat may sound like a bonus but I've known several people who spent time travelling around Asia with habits of varying levels and they've all said that even mild w/d in heat and humidity like that ampilifies the unpleasantness exponentially. Not to mention the paranoia that is all but inevitible when in a country with such strict drug laws. I certainly wouldn't be taking any Subutex into Thailand (or anywhere else for that matter) without the necessary paperwork. They have a rather dim view of drug smuggling don't they? Couple of Subbies may not be much but I would definitely not risk it.
If you have a few weeks before you're leaving you should have plenty of time to taper down from 1mg. That would be my suggestion if getting the necessary paperwork in order to legitimately travel with bupe is not a feasible option.
