The essential goal of this initially being, to allow a bartender to float between the two room bars easier. Without having a wonderful time, with having about 20 or so commands to deliver 6 drinks. Get drink get drink move give drink give drink move. And so on.
It also sets up some interesting situations, if they allowed the trays to be used with any food or small object eventually. Ever wanted to serve your rivals their dick on a platter? Ripped out their cyber eye? Give it to them on a platter to show your dominance over them. You'd be able to do that kinda stuff with this object.
I think it's a good idea, but maybe not a priority. Just proposing it as an idea, as I find it a cool idea with some potential themely consequences.