q1: Do I have to play both days?
a1: No,...but showing up only one day means you cannot possibly
win any prize and you'll be excluded from playing any
(semi)finals. The entree fee will not be less.
q2: Why is the entree fee twice as much as usual?
a2: The federation has to rent the playing room for two days
instead of one day.
Any more questions? Email me (jan.de.graaf@othello.nl), and I'll
answer you personally and put genaral questions and answers here
online.