In the south and midwest, the church ladies usually take care of this. Since you've been asked, it's not likely you'll be criticized. The last one I did had:
Mini Sandwiches - 2 ounces of filing on artisanal dinner rolls, with four...
Cash only, no credit card fees.
One question - do you want to be known for $800 weddings? That's the kind of word of mouth that comes from these events.
Bags suck, trust me, too much labor. The best is a 3-comp box - sandwich or main, side, dessert. We buy 1.5 ounce cookie pucks and bake them or we buy clementines, baby apples and grape clusters.
Check out these boxes make from...