We are due to go away soon from Heathrow T4. OH and I like a couple of drinks before the flight (at 9pm). However, I was shocked last time that a glass of wine is over £10 a glass. If we are discreet, could we get away with buying a bottle in Duty Free and drinking it before the flight (and disposing of the empty bottle before boarding). I know it's not allowed but has anyone done it before and got away with it? Quite frankly I'm getting sick of having to spend C 100 quid for something to eat and a couple of drinks each (family of 4) and am looking at ways of cheating the system 🤔