I was living in Germany at the time, but the chance to see City at Wembley was too much to miss, so me and my wife decided to make the weekend of it, staying in London with a family friend. We left Friday afternoon for a ferry back to the UK arriving at our friends in the evening, listening to the derby the following day, couldn't get back up for that as well, and wouldn't have got a ticket anyway, as I'd been out of the UK for 3 years at that point, and lived away for more than 5, so my season ticket had obviously lapsed, though I still did as many games as I could.
On match day we got to Wembley early, my wife had never been before, and went in pretty much as soon as the gates opened, excited to see City at Wembley. However I had to be in work on Monday morning (back in Germany), so we had a tight time to catch the ferry after the game. So I'm afraid when it got to 5-1, I thought "fuck this" and we left to get back to Dover before we got blocked in by the traffic, as we were walking back to the car, we heard a couple of cheer's, eand I just assumed we had been utterly battered, but keen to find out the final score we listened to every sports bulletin on the radio on our way back to Dover.
It was ages before it even got mentioned, and I couldn't believe I'd done all that journey, and had missed us score 3 times at Wembley.
I've rarely left a game early ever since.