Thanks all for your clarification,
My plan was:
- My parents and I are arriving into London afternoon the 15th Oct. With the jetlag this day would be a relax day.
- 7 full days in London 16-22nd (my wife and I first time to Europe)
- Head to Bayeux for 3 nights on the 23rd October from London for D-Day and Mont St Michel
- Head to Paris for 7 nights after Bayeux.
Working backwards by looking at the train from Paris - Bayeux, I think the ideal time for me would be the 2:59pm train departing St Lazare, and arriving at Bayeux at 5:14pm. My BnB check-in is 6pm, and would allow for a relaxing evening before the tours the next day. To accommodate the 2:59pm train from Paris, the 9:30am Eurostar from London arriving 12:59pm at Gu Nord seems ideal, giving us ample time for the transfer from Gu Nord to St Lazare, as it is my first time.
If I attempt to save costs by cutting London by 1 day and heading to Bayeux on 22nd instead, I would save approximately 240Euro across the 4 of us. However that would mean 1 shorter day in London. What is your opinion? Swallow the cost and enjoy 1 more day of London?