Right, but presumably the point of the party is to be social, hang out, get to know each other, not just eat cheesecake. So serve something besides cheesecake/sweet things, to cater to guests who don't have much of a sweet tooth, are watching their weight, whatever.
Ummm, the point of the party is specifically to sample cheesecakes, right?
It has nothing to do with wanting to get together with friends without the rest of the family.