ira

Hi M,

>If we don't buy before we go, can we just go to the ticket counter and purchase an hour prior to the train departing?

In general, yes.

If you are going on weekends and holidays or in high season, it might be difficult to get the train you want.

ira

Hi alt,

>is it possible to book a PREM for a connection that contains a train change, or are they only sold piece-wise? <

Depends on the route. There are PREMS for Paris/Brugge via Lille-Flandres where you have to change trains.

PalenQ

I would think that the PREM fare only is Paris-Lille and the next portion is simply a point-point add-on fare that can be used on any train.

I question whether the PREM fare is paris-brugge.

Lille-Bruges trains cannot be reserved so there would be little reason, even if a PREM fare for the cheap Belgian portion, to restrict it to one train. So not an applicable example for original questioit seems

altamiro

Yes, but what about the other way round? PREM Brugge to Paris, you enter the "right" connecting train in Brugge, which is delayed by say 15 min and you miss your scheduled TGV - all of this due to SNCF´s fault, not yours. In this case the PREM should be, with signatures and all, valid on the next train with free seats.
Of course the radial structure of the French rail network precludes inter-TGV changes - is there any one single TGV run that does not start in, end in or passes through Paris (including suburban stations)?

PalenQ

TGVs Geneva-Montpellier