Hey, no problem, I have the solution for answering that question. We start with bringing back your memories on what you have enjoyed or hated on parties you visited.
Put this in a row, because that will give you the opportunity to organize your dream party (and the dream party of the guests as well).
Nowadays most talk is about theme parties. The previous questions like; am I serving Food? How much guests and do I want to host a sit-down dinner or a buffet still are the questions you should ask yourself.
However, your supreme question has to be; what would be my most favorite type of party to host? If you are thrilled by the thought of getting 8 of your best friends around the table and serve them diner, at any time, the sit-down dinner would be the best option.
On the other hand, when you like to cook and it comes into your mind to invite a few more guests, who do not mind to serve themselves, then the buffet style would be perfect.