But a more valuable answer has less to do with me personally and more to do with people with tons of food allergies in general:
-We are probably down to invite you over and cook for you. Just be prepared for stuff with lots of alternatives, or somewhat strange dishes. That said, I can eat steak and potatoes, so I'm always down to grill.
-If we go do a thing, like bowling, understand that the time might be a little earlier or later than we'd like, because I might want to eat first or duck out early to go home to eat. I can get by if I bring snacks, but unfortunately there just aren't many non-perishable snacks that I can eat.
-Day trips tend to be limited since I can't just grab food somewhere. Same deal as above applies. This is honestly the worst. I miss just heading out somewhere for a long day on the weekend, getting brunch, then dinner, then ice cream...man. The freedom is incredible.
Would you go bowling with me? Could we play cricket in a nearby field? Can we sing karaoke? Would it be better or worse if our coworkers were drunk while singing?