Attagirl, I have 3 celiac family members including one who is also lactose intolerant. Universal did a great job when we were last there. The chef and waitstaff at RPR in particular get five stars from me -- in addition to having gf options, they would also make special things (not on the menu) like donuts for the kids.
We did prefer the sit-down restaurants at the parks rather than taking a chance with counter service. Mythos and Confisco's were our favorites.