The Foam starts at different times, but never before 3 a.m
I mean i would not miss the night if you have never been to a night like that before.
It does have some negative parts to it aswell though, the next day your eyes might hurt a bit due to all the foam getting in your eyes,
never talke any valuables into the club, and do not wear any nice leather shoes they might well get wrecked.
As a newcommer, definately go to one of the parties, and it depends on you, there are always different Dj's so if you do not lilke the music then stop by after 3 a.m
If you like the music then spend the whole night there.
just do what you like doing, have the best time of your life in ibiza!!!!!!!!!!!
Madfred