Quoted for great justice.
Seriously Ant, if you think that lots of sex is required for for a good time all the power to you, its just a little sad. I wonder what you're going to do with the rest of your life. Guess what, having a lady friend on schoolies is a pretty sure-fire way to have sex heaps and it would sure beat drunken and meaningless one night stands (if you're lucky enough to find any).
I'm not going to drink (other than the occasional vodka) or have sex on schoolies (my girlfriend isn't coming to schoolies with me and my friends). I'm just going to enjoy spending time with my friends one last time before we all go our separate ways. I'm going to sit on the beach with a guitar and notate all the songs and arrangements that have been floating around my head over the years. The rest of my friends, bar a few, will probably be drinking and looking for sex, but i'll be there to bail them out when they get arrested. Thats okay, because i'll be the only one without a hangover when playing paintball the next morning.
Anyway, to answer the first question; that probably depends on a number of factors, your charisma, pickyness and of course whether there are willing women availible. Did you seriously think someone could give you a figure? Man, think before you post shit like that.