OK here's how this works:
For each party we come up with a food theme. Like... Mediterranean, Breakfast for Dinner, Tailgate Favorites, Deceptively Nutritious, Three Ingredients, etc. You get the picture.
For this first party, the theme is Tapas. Or Pinchos. Whatever. Call it Finger Foods. Small stuff.
Everyone comes with a food and a drink to share that kinda aligns with the theme.
That is the absolute extent of the planning.
Don't feel like making tapas? Grab something easy at the grocery store. Not a problem! Don't feel like grabbing something easy at the grocery store? Make some delicious tapas to share. Not a problem!
The one rule is, don't bother asking what you can bring, because no one really cares all that much.
Just being honest here.
Inevitably the food and drink all combine to make for an amazing feast, no matter what it is!