Also, if going to Dalwhinnie, Kingussie or Newtonmore buy a ticket to Aviemore a few stops down the line as it works out cheaper.
Technically that means you dont have a valid ticket if you get off at those stations, so if they stop you then you might have to buy another ticket.
If they stop you getting off at the station you were getting off at and tell you you need another ticket for a shorter journey which you’re allowed to make anyway, you might get thrown off the train at the station you were getting off at when they decided to interfere with your perfectly legal disembarkation? really? I’ve never heard the like.
BTW train lunacy isn’t all bad.
To cycle the Forth and Clyde/Union towpaths, I took the train to Glasgow, then returned from Edinburgh. Dundee-Glasgow, and Edinburgh-Dundee can be done under Dundee-Glasgow return, but couldn’t get the Dundee-Perth discount.