Also make sure you sit near the forward door so that you can make a quick exit. I know Ryanair disembark using both fore and aft exits, but in my experience the pax at the front always seem to start disembarking before those at the rear.
Also you will have to pass through passport control and then re-enter air-side via security, so any liquids you may have bought at Brno or on the flight will be confiscated.