Hi there,
I had to eliminate gluten and everything else for a few months to try and identify any food allergies my son may have had (he was nursing at the time). No allergies to my milk, thank goodness, but I got to experience how the difficulties of an allergen free diet for three months. Also, my son is allergic to cow's milk and egg now, so we are careful eating out due to those allergens.
As far as eating out gluten free, I found Chipotle or anything Mexican to be acceptable - you can do corn tortillas and chips and then just be selective about the rest.
Barbeque is another excellent option. Always check the ingredients of the sauce before using. We always get the barbecue cooked without sauce and get the sauce on the side. Good, authentic bbq that's been cooked for hours tastes fantastic without sauce.
We also bought rice bread and took that wherever we wanted burgers and had the establishment just bring the burger plain. You can also ask for (or take your own) extra lettuce and make a lettuce bun.
You can do Tokyo Joes. They have a gluten-free soy sauce. TJ is VERY allergen aware - they have a great list of ingredients menu. You can also buy gluten free soy sauce at the store for your own asian fare meals at home. Mongolian Grill fare has gluten free too.
Bob's Red Mill has recipes on line.
You can cook almost anything with an alternative to gluten. Quinoa, mentioned below is good. There is potato flour and rice flour and numerous other things. Go to a Whole Foods or Vitamin Cottage, or some other health food store and ask for gluten free. It's out there. It's like a whole other world we didn't know existed. And, your family will eat the best its ever eaten. :)
Check out http://www.kidswithfoodallergies.org/ for more support and information.
Email me if you'd like more support. Good luck!
H.