The crowds weren't half as bad as you find at Buckingham Palace for the Changing of the Guard or anything like that, but we certainly had to fight our way through them a bit all the same! It was quite fascinating! Sort of a fun disturbance of our plans for the day.
So instead of the Abbey, we just walked all over London. We walked along South Bank, under the London Eye, we grabbed a bus that took us past Trafalgar Square and hopped off at Oxford Circus, walked through Piccadilly Circus, and China Town, sat at a bench at Leicester Square (that's pronounces Le-ster Square if you're a local, don't ask), and then grabbed a train back home! We'll have to reschedule our Westminster Abbey tour for another day. But the weather was beautiful and it was fun to see so many iconic London sites! Enjoy.