Hi,
In IOA Mythos was really good for GF. We had a hard time last yeat at US though. QUick service counters has nothing unless you do the buger no bun thing. I do know that you will have better luck at sit down restaurants.
Did you already go on your trip? Would you mind posting your gf findings at universal where you go? We will be going in a couple of weeks and I don't know what to do about lunch inside Universal.
Hope you have/had a great trip!