Actually I originally thought it was smaller than it actually is.. I was expecting it to be small tbh and in the first few hours it was bigger than I expected, and then bigger still once I had actually walked the whole length. Found a few good suppliers learned a little about some stuff, all in all it was a good day.
The cable car ride from Excel to o2 was excellent and I saw a couple joining the mile high club in a cable car going the other direction, bonus!