1. No big deal. Yep, that's right. I take the approach of it's no big deal. Yes food allergies are a big, big deal. But how you approach the situation is what makes everything easier. For example, we plan on going trick-or-treating with our 3-year-old. However, I'm not going to stress that all the candy she gets she can't eat. I'm not going to feel bad that she can't eat all this candy because of food allergies. I'm just going to switch out the candy out of her bucket to candy and fruit snacks that she can eat when we get home. It's really no big deal.
2. Nobody really
3. It just is what it is. I've dealt with food allergies since I was young. I just eat what I can. It just is what it is. Nothing more or nothing less.
4. Just make if fun in your own way. We've been making treats and candy at home for a couple weeks now. Her Halloween experience has been expanded to more than trick-or-treating alone. We also read a ton of books about Halloween and fall. Trick-or-treat is just a small part for us (although a very exciting part).
Be sure to check out my cheap Halloween treat suggestions!