right now terminal 1 is closed so is the low cost airport. The airport is too busy! Security control is horrible, never ending queues, they make you take out chargers, rude, sick security staff.
Worst airport I've seen since a long time. Wifi only for 30 minutes (very good when you need to wait 3 hours for connection flight), women bodychecked by men! Long waiting... Unfriendly stuff...
Don't cross customs too early if flying outside Schengen - there's no much to do beyond that point. If your onward flight is in more than 4 hours you can go out and shoot a selfie in the city center.