I think there are a couple members here who have... you could probably PM them or contact them via the board. Bodywork_Guy comes to mind, I am sure he has taken the course. Hopefully the above threads will prove enlightening!
“Try to be like the turtle -- at ease in your own shell” - Bill Copeland
I took the Biotone spa class and thought it well worth the money. You will learn how to do treatments in a dry room (meaning no shower or vichy shower). It is taught in such a way that now, every time I do a wrap or scrub, my clients are tickled that it is done in such an efficient and smooth manner without them getting cold.