Turns out I got tickets for, I assume, more than one event given the amount that came out. Money didn't go out till the last day, by which point I'd given up looking. Just waiting on the cryptic crossword clues for what I'm getting to go and see now. I'm going to assume one is either the fitba qf at Cardiff or show-jumping as two of each of those were kids tickets, but that leaves enough for one of the athletics sessions or the team sprints at the velodrome.
The whole process is still a pile of shit though.