because the amount of seats on each flight at the lower prices are limited, you might not get the best deal by block-booking that many all at once. you may get a better deal by splitting the booking, then averaging-out the price yourselves betwen all travellers.
if you are all travelling together, then watch yourselves in the airport. If you're being rowdy in any way then the airlines will just offload you and your mates without even thinking about it
Er - Sorry if I'm mistaken spudqueen, but isn't this what answerbank is all about. fvck off somewhere else if you have nothing of any significance to add!