I am planning to fly open jaw and go from London to Paris by train, probably on a Sunday (mid-September).
The cheapest tickets seem to be 1/2 price if bought in advance on line. I am over 59, so I can also qualify for the senior price - which seems to be about $1 less.
How much in advance do I need to purchase the ticket?
How can I ensure getting a forward-facing window seat?
Any problems paying with a US credit card online?
Thanks for all the help (past, present and future).