All colleges we have looked at have been accommodating--at least on paper-- about allergies. The cafeterias have been easy to negotiate and most have Vegan and Veggie and kosher areas that offer a variety of foods without eggs and dairy which is good. Most places I've seen also have a gluten free area including toasters-- so that's good too.
We recently had lunch in one of the college cafs --my son ate from his previously packed lunch-- college visits are no time for accidents! As we inspected, I saw that the staff used separate utensils for each dish served; there was little spill over-- at the hot service bins, the salad bar was a different story. and there were a number of options for my multiple food allergic son: kosher roasted chicken, white rice, plain burgers and fries, roasted "steak" and steamed vegetables-- choice actually.
The salad bar was OK, but the dressings were a little sloppy -- ingredients were listed for every meal, including the allergens, on easily visible cards. And the servers were more than happy to help me with ingredients and with labels.
It was a relief, but also the slamming knowledge again of how every day these allergies are a negotiation in life, a task, a risk.
I know that our kids are up to it, just wish they didn't have to be.