They email out a new booking code but do not require any coupons to be collected - apparently that number is my seat reservation.
I wonder if the extra coupon(s) could be collected if it were to be tried?
I plan to try before starting the journey.
"The reference number you entered could not be found" on an Abellio Greater Anglia machine.
I managed to travel from Cambridge to Edinburgh on four trains (three of which were not my booked train, due to severe disruption on the
ECML▸ ) without having my ticket checked a single time, so could not see how they checked the new code.