I have zero first-hand knowledge of these charges, but I am betting that the phone call was a conference call. The charge for coffee is pretty much in line with hotel catering costs I have encountered. Hotels charge exhorbitant prices for AV equipment rental, and they often forbid anyone from bringing it in from off site. About the elevator operator charge, I haven't a clue.

I am annually involved in the planning of a law enforcement trainers conference that is always held at a full-service hotel or convention center, and the charges detailed here are not inconsistent with what we have to pay.