This high profile AC adapter is a terrible design... Yes I have an AirMini and use it for air travel and hotels.
The high profile wall wart design is heavy and slips out of overused / over inserted electrical outlets. Overused outlets are common on airlines and hotels... especially on a plane, expect your airmini to lose power because your adapter slipped out of the outlet.
It's also high profile, so instead of a nice slim 90 degree, you have 2 inches of extending adapter... which can be bumped easily on a plane or may not fit in hotel outlets that are behind furniture.
Lets add an international adapter on top of the AC.. for european or asian, and damned if you can get the huge thing to stay into the wall. To get around this obvious design flaw... you need to by a 1 or 2 foot extension cord and secure the adapter and the core together. We can only hope that resmed has a 2.0 version of this adapter in the works.