Thanks! We sort-of did that (although the tonic was Canada dry, not fevertree): the flight was delayed 3 hours so we stayed on the beach until the last minute and then legged it to the airport, leaving just enough time for a shower in the lounge and a bite to eat... The lack of a lounge was an unwelcome surprise, compounded by the fact that the late departure and 1 hour wait for luggage at T5 meant that the arrivals lounge was closed by the time we got there so I couldn't get showered there either. Fun!