I've been to Bethesda Tastee Diner twice recently, and both time, the food was way below even Tastee's standards. The earlier visit featured some of the worst service I've ever encountered, with fries delivered 10-minutes after the already late sandwiches, and an interminable wait for the carry-out order I placed when I first arrived, all from a server wearing a bluetooth device. On the second visit, the service was fine (Marisol), but the well-done home fries were inches from raw, and the cheese was unmelted in the grilled cheese sandwiches. Both times, the place was unusually empty.
I know it's only a diner, but I didn't expect such slipshod results.