I too have done that at the cinema (Was it Vue by any chance?)
My Mum booked me a ticket to see Harry Potter in 2005, back when Vue's booking provider didn't accept Solo or Electron Cards (What the vast majority of teenagers under 18 had at the time.)
I just took in the printout receipt to the Box Office and explained the website didn't accept Electron Cards. To which the Gentleman said the receipt showed I had paid to see the film, stamped it and informed his colleagues at the screen check-in that I was an "anomaly ticket holder" All sorted, no dramas
In previous years when
FGW▸ were using thetrainline before they also accepted Electron Cards, I phoned up FGW and explained that I wouldn't have the card to collect the ticket and could I arrange to collect it from the station on production of some ID or something. To which they said that would be no problem at all and I could collect the tickets from Exeter St Davids on the day of travel. On arrival the tickets were already pre-printed at
EXD» and had been put into an envelope waiting for me to collect. I gave the chap my name and booking reference and I remember he said: "Ah yes, printed those myself this morning for you." he handed them over and that was deal done.
That was back in 2006, when I had to collect a First Leisure Advance Single which was significantly cheaper than an EXD - Castle Cary First Open Single
I'm hoping such things are still possible! But that was over 6 years ago, A lot has changed since then! But I highlight a good point, how many parents book rail tickets for their kids or the (certainly the case for some posters here) booking a journey for the M-i-L to take to your house? many will have the card used to collect. Also as much as I had "What if's" What if the booking card used was damaged before the journey??