I think if you buy carbon during the barbecue, it will light a fire for you and buy as much as you want, so it will be less wasteful. Buy the rest yourself. The exact weight is not very clear. Barbecue depends on the quantity. So I made a list for your reference.

There are 60 chicken wings. Many people will eat chicken wings. One person and two should be fine.

There are 30 wing roots, which are a bit like chicken legs.

There are 75 sausages. Sausages are easy to bake and delicious.

Seven eggplants. Eggplant is not easy to bake, but it is delicious. If anyone can bake, buy more.

Corn is about 10, which is not easy to roast. A corn can be cut into three sections, and of course it can also be roasted whole.

Buy some hot pot ingredients, such as meatballs, fish tofu and sausages. Now many of them are in small packages, so you can buy 20 small packages.

20 steamed buns

a bundle of chives

3 Jin of meat

3 kilograms of white bread

6 cucumbers

Green peppers are about 10.

6 bottles of barbecue sauce, half a liter of peanut oil, a small bottle of sesame oil, 300 grams of honey, 6 bottles of sauce, some cumin powder, some Chili powder (you can buy those bags, and buy 4 more bags of cumin powder. I don't know how many grams)

80 disposable paper cups ~ 100, 15 brushes, buy more tin foil, one stove is about half a meter, three stoves, according to the changing quantity, about 6 meters.

Beverage: one box of chrysanthemum tea and three bottles of mineral water (1.25 liter); 2 bottles of green tea (1.25l); Coke, orange juice or something. We brought scented tea when we went and cooked it ourselves.

Pay four cards. . .

That's it. Maybe you haven't thought enough. See for yourself.