If your boss is the sort of person who would serve coffee to the team you're probably fine cowtowing in this way. Otherwise, I think you risk being tainted in their eyes. They might see the others at the meeting as superior, wrt the role of programmer (etc.); and unconsciously associate you with less technical work.

I think you risk "why are we paying $$$$$, isn't that the guy who serves the coffee" even if it's subconscious.