It can be done.
You have to be patient and you have to be accepting of the lack of variety, once you evaluate what is served, you will be amazed at how awful the neolithic food is. Too much starch. (Excessive breading, batters on fried foods; All kinds of breads—they’ll even bring you a giant pile of rolls for your table, how… inflictive. 
) Too much sugar (Cakes! Cookies! Pies! Puddings! Jell-o!)
Concentrate on the Big Three
You need to get your fats, complex carbs and your protein.
The protein is covered if you aim for the meats at the grill area as long as they’re not overly sauced. Grilled fish is often available. Most sauces add large amounts of salt and sugar. If the grilling area isn’t so great, there is often grilled chicken or steak on the salad bar.
The complex carbs are covered if you aim for things like steamed broccoli, cauliflower, carrots [although, often the carrots are sweetened] and cabbage.
Fats from guacamole, olive oil on your salad—which you should have piled up with a hefty amount of varied vegetables.
Skip The Desert Bar
Go back to the salad bar and get some strawberries and pineapple. You’re done.
