I am on a low carb eating plan, the MCDonald's southwest salad is delicious. I am on the east coast, and with some of their salads, the ingredients are often missing.
When they first introduced these salads, they included thin chinese noodles, tomatoes, mixed lettuces, snap peas, carrots edamame, and mandarin orange wedges in the Asian salad. This was a wonderfully healthy salad, crisp and fresh. Now you never see the noodles, you are lucky if you get a tomato and other ingredients are substituted. I don't like croutons in an Asian salad!
The cesear salad never had a tomato in it, the southwest salad(by far my favorite) is sometimes missing the corn strips or they will sub for noodles or corn strips...croutons! SOme local restaurants differ in the amount of iceberg lettuce they include in their salads.
Someone told me that in some areas there are central warehouses that make these salads and then truck them to the local McDonalds each day or every other day. I did call the customer service at McDonalds USA and they said all salads should be the same, you need to give them the store number where you bought the salad that was missing all the components. They will contact that restaurant and talk with the manager.
More aggreviating than anything is to buy a salad at the drive thru and find that the kids behind the scenes did not include utensils, napkins or desssing!