On day 9 we watched the changing of the guard, visited Green Park, St. James' Park, the Royal Mews, explored the shops in the West End, and watched Phantom of the Opera.
Day 9 was a day of royal activities that began with the changing of the guard. Unless you want to stand outside of the palace at least an hour before the changing of the guard begins, you will not get a good viewing spot. You just won't. It was so crowded!!! It was like rivalry college football game crowded.