How do you get to the Tampere-Pirkkala (TMP) airport for morning flights?

Hi all,

I was checking flights from TMP airport, and for some reason most of the flights to Riga are scheduled at a very bad time, 05:20 in the morning. Obviously Nysse doesn't have any option to get to the airport apart from being there from the evening before. What do you do in such cases?

Is TMP airport 24/7 open? So if I go there the evening before can I sleep there on the benches? does it have any lauange?