Thus far it seems pretty easy. It is mounted and is in a terrarium. Humidity in the terr generally is somewhere between 62-75%. I try to give it a soak once or twice a week but if all else fails at least mist the roots.
Another plus was that it wasn't a terribly expensive plant to purchase.
Keep in mind, Steve, that Mini Mark can get rather large, outgrowing "mini" status. This one, however, should remain quite small.