If having mulitiple apps, I usually figure a minimum of 3-4 different apps for a party, and 1/ person, so 180-240 DIFFERENT ones for you. Some won't like a certain one, while others will take 2+ of the ones they like. I hate having too many leftover ones, as you don't want them to fill up on apps prior to the main meal.
Depends on what you're planning on doing for the whole party though. |