Any ideas for pasta dishes for a group of 75? I am making ziti and an alfredo.

Sounds wonderful! Hope you have lots of helpers, this is quite an endeavor.
Cold pasta salad with slices of Italian sausage, add veggies maybe zucchini, peas, olives, cherry tomatoes,shaved cheese wih Italian dressing?

This time of year my favorite is multicolored halved cherry tomatoes, mozzarella pearls with any pasta shape drizzled with a basil garlic balsamic vinegrette served at room temperature and garnished with basil leaves.

I would do a chix, ziti and broc.. with olive oil.. always a hit, and easy to prepare for large parties... I tend to stay away from dishes with heavy cream.. so many diet restrictions these days

Maybe a cold pasta? I like the idea of pesto....perhaps pesto with a bunch of lovely summer vegetables (grilled or steamed).

I love vegetarian lasagnas that use besciamella instead of red sauce and ricotta. You can pretty much use any vegetable, but I like eggplant, mushrooms and pesto. There are a thousand variations out there with whatever vegetables you like.

Pesto bar or assorted pestos on pasta. See Saveur mag feature a few years ago...15 to 20 varieties from Italy, Germany, Mexico, France.

Hi Ann, I agree, don't need too many red sauces. Here are my choices. spaghetti cacio & pepe , rigatoni broccoli rabe & sausage ( you can use broccoli instead if you want , or leave out sausage) , Rotini with fresh pesto, Cavatappi or penne vodka sauce (kinda red) holds up well but you serve extra sauce on the side as it tends to dry up a bit. lastly a pasta salad, tricolor Farfalle with cubed mozzarella , red onion, fresh grape tomatoes and herbs , oil . Let me know if you need more details.