I feel like SWR's website may have mis-sold this ticket type to me. I booked a retjrn from Welling to Godalming via Waterloo [East] leaving Waterloo at 13:00 Saturday and returning from Godalming at 19:42. I didn't know exactly what an Evening Out actually was but it was offered to me for this specific route and time, which included non-seat reservations on the SWR legs.
From my reading of the rules (which were not adequately presented in the purchase flow - as I recall they fobbed me off to National Rail which just said there may be time restrictions) this is valid for the Waterloo to Godalming legs, but not for Welling to Waterloo East before 2pm
Welcome to the forum!
Firstly, it's worth noting that any ticket which an accredited National Rail ticket retailer sells is automatically valid for the journey you select when booking. This is a matter of basic contract and consumer law; if the ticket is issued, it doesn't matter whether the retailer has made an error or not - the itinerary/ticket combination stands.
So even if SWR's website had made an error (in fact, it sold the ticket entirely correctly) you would be entitled to travel in accordance with your selected journey.
Furthermore, as hinted above, the restrictions do not prevent you from arriving into London before 2pm for this journey. They merely prohibit you from starting your journey before 12:01, and leaving certain London stations (mainly London Terminals and nearby stations) between 16:00-19:00.
Leaving Welling after 12:00 and Waterloo at 13:00 is entirely in keeping with those rules, so SWR's website was correct to sell you the ticket for your chosen journey.
You can see the above rules in the text associated with the applicable restriction code, UR (available at
nre.co.uk/UR). This link is printed on the ticket for reference, and should also be shown somewhere when you buy a ticket online. If SWR aren't displaying it, this is technically a breach of the industry's retailer accreditation rules- although it's far from certain whether (r when) they will be forced to comply.
It's worth noting that there are different restriction codes applying to SWR's Evening Out tickets, depending on the journey you are making. As above, some don't have restrictions on arriving into London, so it's worthwhile checking the applicable restriction code (and its text) if you want to find out the details.
and indeed I got told to seek assistance both ways for that at the barrier (code 117 on the way home). It's a bit weird because I'm both going into and out of London both ways.
In the end I was let through the barrier by staff at Waterloo East without conversation both ways, but it made me worried.
Barriers are usually programmed to accept or reject tickets by very crude rules of thumb, because barrier manufacturers don't tend to let station operators configure them in sufficient detail. Therefore whether a ticket opens a barrier isn't a reliable test for whether it's actually valid.
This is particularly the case if you're using a ticket that is issued to/from a different station than the one whose barriers you're passing through, or if you're using an Off-Peak fare that is controlled by a different train company (such as SWR) to the one that manages the barriers in question (such as Southeastern).
Both of the above factors apply in this case, so it's difficult to draw much of a conclusion from the rejection. Your ticket was entirely valid (provided you left after 12pm) so the rejection certainly wasn't an indication that it was invalid - it just meant the barrier wasn't
programmed to recognise it as valid.
In any event, error code 117 would suggest that the rejection was because the barrier thought your ticket had already expired (see
this page for a list of each error code and its meaning). That means the time of day probably wasn't a factor in the rejection.
Obviously having a valid ticket rejected can be a bit frustrating, and sadly the level of training for barrier staff is often woefully lacking - omitting basic details like the meaning of restriction codes. This means that some staff simply take the barrier's acceptance or rejection of a ticket as "gospel", in other words that the ticket would have opened the barriers if it were valid. That's not at all the case, but it's easy to see how conflict can arise from that situation.