Off-topic:
We (hope) to attend the Ceremony of Keys at the Tower of London on a Wednesday night. It ends at 22:05.
The walk back to Hilton Bankside is 1.3 miles per Google maps. We really don't have a problem with walking that, but it will be dark. Any thoughts on how advisable this is, walking at night like that? Public transportation doesn't appear to save a lot of walking. Taxi for 1.3 miles feels rude (disclaimer, I live in Southern US, with no public transport or frequent Taxi use).
Thoughts?