Yes, as Rock says, 2:1 is great - in theory - but when two of the girls seem happier with 1-2-1s with the same guy that leaves 8 guys and 3 girls. It's usually the case that one of the girls isn't really up for it so that results in a bunch of guys walking round with their dick in their hand looking for some action.
Not hypothetical. I attended three parties in their previous incarnation and that was my experience at two of them.
Maybe leopards do change their spots but I won't be spending £220 to find out if that is the case.