Terminal Peeves?
London Heathrow Terminal 5 and its lack of facilities to get a full meal landside.
On Departure level there is an Italian chain restaurant (and not one of the better examples of the chain) and a pub which serve meals. At Arrivals, there are several coffee stands and a Marks and Spencer food to go. All this is fine, until the day when you have set off to collect someone from said airport, which can be up to 4 hrs (depending on traffic) from home, and on arrival, find that the flight you're meeting is delayed!
What is more irritating is the knowledge that on the other side of security are numerous restaurants serving delicious food, and you can't get near them!