Have gf bread and bagels that you can substitute for $1 up charge. Lots of options.
They are friendly and helpful. Sandwiches with GF bread. If you ask them to be careful they will make sure they take precautions.
The only thing they have Gluten free is a salad. Staff is not very knowledgeable and they are extremely slow with their service. I've waited for a salad for 20 min when they weren't busy. If you have time and you just want something to eat its fine, but don't expect much.