No idea how someone could not drink while working for the Foundation. I mean, SCP-231-7 caused Greens to take amnesiacs, just for merely seeing Procedure 110 Montauk in action.
There's the possibility of an SCP breaking out of containment and killing the shit out of people. I don't think many people in the Foundation haven't drank alcohol atleast once.
Well, if you want control of the foundation of giant death monsters and sending innocents even sometimes children to die for research, be my guest. You can speak about it to the foundation's 05's.