I am trying to compile the right quantities for a receptions with a potential of 700 people (that's a high number, it realistically will be about 600). I have already purchased many of the ingredients but I am looking back over everything and see some contradictions so I want to make sure I have the right amounts on some things. For sour cream I purchased 25 lbs. and according to the baked potato/taco bar that would be sufficient; however, the amount listed in the recipe for 10 says 2 cups (or 1 lb. per 10) can you clarify this for me. Also, is 6 ounces of lettuce for 10 what I should use and therefore I need about 26 pounds of shredded lettuce? I also had a question about shredded cheese. The baked potato/taco bar section when doubled for tacos has about 44 lbs of cheese for 700, but the recipe for 10 in the tex/mex section says to use 1 lb. per 10 people. I'm also a little confused on tomatoes. From the baked potato/taco bar section I have down that 45 lbs. should be fine, but the vegetarian tacos calls for 62 lbs. just for 250. I was hoping that was because they were vegetarian, but I'm not sure it should make that much of a difference.