By customers you mean "people to sell stolen watches to"? Cause if that is the question, neither of these is a good place. Affluent people wont buy obviously stolen watches directly in the restaurant, they will go through middleman that makes them look legit.

And people being there to bet wont be buying watches that much either.

Hanging out at the same restaurant is a terrible idea for a watch thief, you will be caught over time.

That’s not an issue for the loan shark.