Before Security, you'll find 6 or so restaurants and cafés in the Departures area - a few of these are open 24/7. In the non-Schengen area, the dining options are limited after Security; there's a Polish restaurant, a bar and a Costa Coffee café. A wider selection is available in the post-Security Schengen area. Among the 12 eateries, there's a juice bar called Papaya where you can grab a vitamin boost before you fly, and a 'quick-service' restaurant. The family-friendly burger chain Johnny Rockets has 2 outlets in the airport, one in the public Departures area and the other in the Schengen zone.
Run out of bottled water?
You'll find refill stations near Gates 38/39 and by security checkpoint AB.