Originally Posted by Nuster

Perhaps you are over analyzing this? In reality crews are trying to get finished as quickly as possible with a majority of passengers having nothing.Indeed I find I need to stay focused to ensure catching their eye as they pass.
The other point people raise is on staffing levels needed. As I have seen it, it can be done with the bare minimum as most people do not buy. That would not hold through if there was a free tea/coffee/water service.