do you have the exact ticket in your hands now? If so what does it say
on it? Upper left corner, centre, middle bottom?
Is it one ticket noting the time of your Cardiff train
("&Connections") or one actual ticket for each train?
Or do you just have collection number and an Itinerary?
I will pick up the tickets from the ticket machine at Ealing Broadway this Wednesday, the day before I go to Cardiff. While I don't know for sure about what these tickets will look like, whenever I've changed trains on the GWR, it's been in Reading or Slough and in both, the ticket machine has printed separate orange tickets for each leg.
I strongly suspect that your Advance ticket regulations will only
affect the Paddington to Cardiff leg as that’s the only one that will
involve seat reservations.
For example I frequently buy Advance tickets from my small Midlands
town to various parts of the country, via Birmingham. And I’m always
allowed to take an earlier train to Birmingham as long as I get the
actual train I’m booked on for the major part of the journey.
That's good to know. Since the ride to Paddington will be quick, I don't know if the conductor will have time to examine all of the tickets. Of course, there may not be many who board at Ealing Broadway so it could be a fairly quick process to examine the tickets for those who board there.
It is possible to buy an Advance from Ealing Broadway to Cardiff via
Paddington for £15, as the OP has done, so no need to pay to
Paddington separately. It is the cheapest available (outside of any
special sale period).
All the trains running from Ealing Broadway to Paddington whether GWR
or TFL Rail do not have guards. The journey is 10 minutes long, and at
this time of the day packed with commuters. Although both Nigel and I
have asked for details of the ticket and reservation to be absolutely
sure of the situation, the ticket is unlikely to be examined in any
case.
Incidentally Advance tickets are these days sometimes sold on trains
with no reserved seating on a 'counted place' basis.
This is the first time I've had the chance to get on line today. As mentioned up top, I will pick up my tickets this Wednesday from the machine. Is not having the tickets on hand making it difficult to determine if I can take an early train into Paddington? I'd rather not use my Oyster card as the £15 covers the first leg between Ealing Broadway & Paddington although I appreciate knowing that.