They love the word NO. No they can't make a southwest salad, a grilled chicken sandwich, a crispy chicken sandwich, and no shakes. I went through the drive through at 1:30 am and tried to order 3 things, all of which they could not make. I'm not sure what they CAN make.
Probably just a cheeseburger. Or what the employee working the shift deems convenient for them to make with the least amount of effort or cleaning. I ended up not ordering and went right down the road to Jack in the Box, where they will serve the full menu, and are courteous about it.
A place that can't make the items on their menu is useless. Grilled or fried chicken is pretty standard and should not be a problem to make even at this time. McDonalds is really going down the drain in customer service and quality. But it's ok because their competitors always accommodate.