The Closing Ceremony was a mixed bag but then so far as I can remember the same can be said of all the Olympic Closing Ceremonies I have seen. They are supposed to be a party for the athletes, a celebration of what's gone and not an introduction to the city holding the Games. Ours was done on half the budget of the Opening Ceremony and with no time to speak of to prepare. The genius was in investing in the pixels as they definitely saved the day on many occasions. What was left of the audience by the end seemed to be enjoying it and from the participation levels I'd say most of the audience was British, which wouldn't be surprising because there is nothing to keep any foreign visitor in the country once the sports are done.
It would have been good to see fewer old timers who have long since passed their best (assuming they ever had one) but as the idea was to showcase music from a 50 year period and given the lack of time to prepare mass dance arrangements or extravagant sets, it did ok. And I really did enjoy Always Look on the Bright Side of Life! Pity the ceremony couldn't have finished with that really. It would have captured us Brits perfectly.
The Opening Ceremony was a fantastic and original piece of theatre which set our expectation levels somewhat high. The Closing Ceremony was never going to reach those levels and it was an entirely different beast. In no way did it spoil my enjoyment of all that went before or undermine my sense that in spite of my own misgivings, London managed to pull off probably the best Olympic Games in a very long time. And who'd have thought they'd only have about two days in which rain was part of the weather experience after all that crappy stuff we had during May, June and July and are about to get again!