After soaking in those jaw-dropping 360-degree skyline views at the Tokyo Metropolitan Government Building, we hopped over to our dinner spot just a stone’s throw away — Tempura Shinjuku Tsunahachi Tsunohazuan. Hubby had prepaid the reservation via Pocket Concierge (an AMEX-owned platform for booking Japan’s finer dining spots), putting his AMEX Platinum Charge dining credits […]