I've managed to secure another booking through my works staying at the New York hotel for 3 nights 4 days, with 3 days park tickets.

Got a flight from LHR to CDG on a British Airways departing at 0850 arriving at 1100, has anyone flown the leg before? is it normally packed out or is there lots of spaces? do they leave on time any delays?

I will be catching the TGV at CDG bought some Flexi tickets, so if we are on time can I use the tickets thats booked for the 1300(1pm) TGV for the 11:40 TGV? Will I need to go to the ticketing counter to exchange the tickets? or do I just jump on the TGV?