They will put 3 in a row if they will fit.
From what a CM told me there, if you have an ADR, you will sit in a car. If you are a walk up, you may get seated at one of the tables. I don't know if it's true, you know how misinformed some CMs are.
We have dined here at least a dozen times, with an ADR, and have always sat in a car.