You can get your burger 'protein style' which means that instead of getting a bun, they'll wrap the burger in iceberg lettuce. Healthier, pretty tasty but slightly messier as well.
Get a Neopolitan shake instead of a regular one. It's part of their secret menu and will mix all three flavors into one (chocolate, strawberry and vanilla)
I'm from New Jersey and I had to try In N Out before I left to come back home. I loved it and had a pleasant experience here! This East Coast girl was impressed!
2x2 animal style, animal style fries, chocolate shake. Go here if you're at the GGB or Marin Headlands: many people don't realize how close it is so tourists aren't as common.
The fries have to be ordered extra crispy, and you have to try whatever burger you get "protein style": bun made of iceburg lettuce, completely brings out the flavor in everything else!