You need a few people in the kitchen to set up, who won't be at the wedding.

cheese, 1 pound per 10
crackers, 6 pounds per 100
veggies, use the veggie tray page
dips, Ranch dip for veggies, use the veggie tray page; for the chips, 1 pint per pound
suggest you do a hot dip in the crock pot as one of the chip dips, such as queso, or spinach artichoke
chips, 1 pound per 12
pretzels, 6 pounds per 100
You need to add to this:
fruit tray, use the fruit tray page
a meaty item, such as 10 pounds meatballs with 3 quarts sauce per 100; or 15 pounds little smokies.

make yourself sandwiches
pork, turkey and smoked meat; turkey usually most popular, 1/2, then 1/4 each of the others
and all the fixings, use the sandwich planning page
sliced cheese needed, 1 ounce per person
Add potato or pasta salad, 6 gallons
add a bean dish, 4 gallons
add a salad or slaw, 4 gallons slaw or salad per the plan for 100 page