I'm on SAN-DTW in FC right now and the guy in the row in front of me is apparently allergic to milk products so he's decided to have the dietary equivalent of a dykwia moment because he missed out on the chicken salad option, the FA started up front even though we're on an odd-numbered flight and he now only has the philly cheese steak choice available; apparently anything from the Y cabin has cheese on it too. The FA did offer to pick the cheese off the philly for him before it gets microwaved but he didn't want that.

If you have special dietary requirements that would, from my experience, very rarely be met by airplane food since most involve cheese or milk products of some sort, wouldn't you make other arrangements in advance and bring something rather than get stuck with the chips and salsa snack box from the Y cabin?

Anyway, just made me curious if DL lets people with food allergies put in special requests before a flight?