I bought advance tickets ages ago for a trip tomorrow.
I've just looked at them to check the train time and I've clicked on the wrong railcard.
I've used the 16-25 rail card and it should be a Two Together one. The discount is 1/3 for both Railcards so I've actually paid more than I should have done because only one ticket is discounted, whereas both would have received the 1/3 discount if I'd got it right.
What's the worst that could happen? Journey is first thing tomorrow.