On May 10, 11:34 pm, Richard wrote:
Paris - queue at the ticket office at the gare du nord , buy a Mobilis
(or whatever they're calling it this year). Sorted.

Heathrow - queue at the underground ticket office at Heathrow Central,
T4 or T5 and buy a One Day Travelcard or Bus Pass. Isn't that the
same?

Yes , except in Paris you won't get stitched for twice the price for
being a tourist and just buying a paper ticket.

B2003