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