Hello, the Airport is a smaller size, really easy to get around. Just two floors. There are few coffee shops and news papers shops, shop with local tour - yes, it is possible to tour the Airport for a few crowns. The Billa store that is downstairs has a good selection of local fresh food, they have bakery and some local Czech and Slovák food such as Halušky. There is Burger King at Terminál 2. I would not recommend to sit there at evenings, perhaps just to watch suitcases more. The guard is walking by and it creates unpleasant scenes at times.
There is a post office and also wrapping station for luggages, most of all the restaurant upstairs has beautiful selection of Czech cuisine.