It's an iconic hamburger joint that's less expensive than Johnny Rockets. They know what they want to serve and don't complicate matters with excessive diversification. Arriving early for a weekend lunch is a good idea, as the place tends to fill up for a late lunch. Eat the French fries early, as they cool quickly. Note that they are gluten-free-dairy-free-friendly with their lettuce-wrapped hamburger meal; so only vegetarians and vegans need not apply.