I am having an anniversary party for my sister. My husband, many helpers and I are catering the dinner. There will be probably 90 adults and 10 children. I have one question. Instead of doing the entree meat dishes, we are doing beef shish kebobs with mushrooms, peppers, onions and then pineapple teriyaki chicken kebobs as main dishes. How much meat is needed considering they will all be on skewers?

Here is the total menu:
Beef Shish Kebobs (cubed beef, mushrooms, pepper and onion on a grilled 12" kebob)
Pineapple Teriyaki Chicken (cubed chicken, pineapple grilled with teriyaki sauce on a 12" skewer)
Shrimp with Cocktail sauce (served in tumbler cups with the sauce at the bottom)
Rosemary Roasted Potatoes
Green Beans wrapped with bacon
Parmesan Risotto
Seasonal Vegetable Medley
Tossed Salad
Spinach Salad
Regular dinner rolls and parmesan breadsticks
Wedding type cake
Cake Pops
Chocolate Cake
Tea (sweet and unsweetened)
Sparkling Lemonade (lemonade and club soda)
Water
Coffee service (how many cups would I need?)

I am covering what you specifically asked. If you wanted the other items also, just write back.

Meat:
1 skewer each kind per adult, 1 only per kid (1/2 and 1/2). Normally, it would be about 4 ounces lean boneless per skewer, but it really depends on how you cut the meat. You might make some for a family dinner and weigh the meat, your style.
I would add veggies to the chicken as well, at least peppers and onions with the pineapple

About beverages:
Tea (sweet and unsweetened)-about 12 gallons, 1/3 unsweetened
Sparkling Lemonade (lemonade and club soda)- 6-8 gallons lemonade, club soda to taste
Water- if bottled, 2 per person
Coffee service (how many cups would I need?)- See the beverage planning [page and do dinner coffee for 100 per the guide. It also discusses ice, plates, etc.