Rickochet Not often, did not drink coffee in the air, ever. My gut doesn't always like coffee as much as I do, so not when flying, no matter when the flight went. Not in Base Ops, nor on the way in.
Sometimes at 0300 airborne times, hard to stay awake though. When I was in MI (Wurtsmith AFB--now closed), we used to fly 2230-0630 to help with maintenance, which sucked.