Cute! Hawkinsara is an intergeneric hybrid: parent genera Broughtonia, Cattleya, Laelia and Sophronitis.
AM/AOS is Award of Merit from the American Orchid Society.
I found cultural info here
http://www.logees.com/ftg/Hawkinsara.pdf
Personally, I wouldn't be too concerned about maintaining minimum 50% humidity.
It would probably do well in a bark mix. (I generally grow Catt alliance in either bark or chc mix)
Seems like general Catt care for the most part, and a not too difficult keeper