There are many parks in the area with the same view. There are alternative places to date. The restaurant has a right to make money, charge a cover charge. Targeting “gym rats” or a pattern of those who do not order or using terms as “top hats” and “strings is discriminating. But going to a restaurant and not ordering or ordering water is not appropriate either.
It shines badly on all jews. There are many jewish customers who use the restaurant and it is a disgrace that over and over, the frum get categorized and are represented to mean ALL JEWS. This behavior at the River Cafe is just not acceptable.