On the next day, we learned that we’re apparently only meant to go to Richmond by public transportation once a trip. We attempted to go to Hampton Court, but nearly were trapped when trying to transfer from the tube to a train. A tube train had gotten stuck on the track. (We think it was a symptom of something more severe because the entire station was shut down for an electrical problem the next day.)
So, game time decision, we turned around and did a river cruise down to Greenwich instead. This was the day I got tan. In London. In May. Wonders never cease.