Book Eurostar from Paris to London (90 days advance ticket) – This took a few hours as my credit card(s) kept getting declined. I had to call and make sure I was approved for this single UK purchase. So I went ahead and took care of the next thing on the list, as well.
Call credit card company and bank with travel plans – See Above.
Print out Metro Map – I don’t need to print it out. I have it on my smartphone. And if all else fails, I can pick one up in Paris.
Print Eurostar Ticket