Oatmeal is free on Sundays (and maybe Saturdays). You only have to pay for toppings! (True as of May 2023.)
All the salads/bowls are prepared off site. They did a thorough investigation of CC sources and found the quinoa is prepared in a facility with wheat so we decided not to risk it. I ordered two different coffees and a smoothie without oats. After an hour, I feel no obvious signs of gluten!