For us, continentals a 1 day event is not that much cheaper than a 2 day event.

And, if there is a saturday night show, the ones that have a long drive have 3 options then,
1) stay to the end, and drive home in the middle of the night, what they did the previous night to reach the event.
2) Leave asap, once sure they dont have any fights left in the competition.
3) Get a night rest, and drive home during the sunday.