In the scene where Vlugge Japie and B2 are in Bassie and Adriaan's hotel room, they have to jump out of the window. Offscreen they would land on a few pillows. Joop Dikmans, who played B2, didn't land on the pillows and hurt his neck.
The hotel room Bassie and Adriaan are in is not in Greece, but was filmed in the Netherlands.