For an upcoming Eurostar journey I'm considering taking, I've noticed a very odd pricing situation. For some reason, the cost of a ticket on the 19:34 Lille & Brussels service is cheaper if I book to Brussels rather than Lille, even though Brussels is further away!
In this case, I know that the Eurostar will stop in Lille (not all do, so you have to check). However, I'm not sure if I would be allowed to get off early? (In this case, I'm interested in booking a ticket to Brussels but getting off in Lille, but I guess it could apply equally to buying a Brussels or Paris ticket and getting of in Calais, or booking a London ticket and getting off in Ashford or Ebbesfleet)
What are the rules on getting off a Eurostar and ending your journey at a station earlier than the one you were booked to go to? (This is somewhat the inverse of this question on boarding a Eurostar late)