Well at the moment Raveen is overseas on holiday - back on 5th of August. Brian works Mondays-Wednesdays. So yes it is pretty quiet. Tea and coffee is provided by the school and is now kept locked in a box due to other users and parachutists clearing everything out on their way through. Kettle is always out though if you carry a tea bag on you.
If you catch an instructor they'll happily unlock it for you.
The reason you've never seen them I can only attribute to them being in the air - keep an ear out for CCV or SFI. If you hang around in Gate 3 for a while you'll meet one of them.