Picked up my race kit yesterday

The t-shirt is a very attractive fire engine red, with my number (933,000-something - the aim is to have 1 million competitors across all the participating cities) on the front, and the list of cities taking part on the back, a la a band tour t-shirt. Also got my ticket for wembley stadium, so i can sit and listen to a techno concert between 5.45 and 7 before setting off at around 7.45 in wave 3. It's all very odd in terms of set up, but it's wembley so i won't grumble. I almost said "shan't grumble" there. Is that a word? It sounds like it should be.