I saw Dvorack's bonitation.
He is a wonderfully equilibrated and socialized dog and this allowed him to pass. CONGRATULATIONS!!
It's true it is not NECESSARY to train your dogs befor bonitation (you were in Lazne with Dvorack and trained him a little, right?).
It's however usefull to attend these positive summer camps, just to try and see how your dog reacts to certain imputs.
(it's also very enjoyfull, see the photos!!
http://www.wolfdog.org/eng/gallery/pic21021.html
http://www.wolfdog.org/eng/gallery/pic21020.html
http://www.wolfdog.org/eng/gallery/pic21019.html
http://www.wolfdog.org/eng/gallery/pic21018.html)
To pass bonitation, if I understood well, your dog mustn't ATTACK, but simply mustn't react cowardly and hide. Shy dogs often don't pass even if trained...
Massimo