We will be in Paris July 15-21. I was thinking to take a day trip via Eurostar to London. One day Tuesday July 16 through Saturday July 20 to choose for the day trip to London. I was thinking maybe Thursday, July 18. I want to go ahead and buy the Eurostar tickets, which we will be leaving Gare du Nord at 7:13 am and returning that same day departing St Pancras at 8:01 pm.
It will be me and my two teenage kids. We plan to walk around the city center, and also will each have a 1-day London travel card for zones 1-2. Does anyone suggest we should go on a day other than Thursday?