Hi there - staying at the CQ St. Paul's, near the St Paul's Cathedral.

Do you have any recommendations of what we must see in three days? We'll only be in London for 3 days unfortunately, before we head off to Paris.

As far as the Tube goes, I assume you can buy the oyster card from the tube stations correct?

Again thanks so much for all your assistance. You guys are such a great help for the (not-so-frequent) travelers lol.