One of our goals while in london had been to try to get in to see the Leonardo Da Vinci exhibit. Ticket were unobtainable, having sold out within minutes of the exhibit being announced. Each day, however approximately 500 people who waited in line were able to go in. Apart from waiting in the cold, it was exceedingly well organized and orderly. Once in, you could stay as long as you liked.
We arrived at the RORC, dropped our bags and went to get in line. It made for a very long but rewarding day.