We had our brunch at Honest Burgers Camden on a rainy morning, just before they were supposed to open. Exploring Camden Market without only a latte and some cake for breakfast made us crave for an early lunch.  The staff had no problem letting us in to escape the rain, but reminded us that we’d have a good few minutes to look at the menu before they can punch our orders into the system.  No problem with us at all, as…