I didnt wear the t shirt at all and customised my own bra not the one they send you which is so frumpy lol.
I had a bum bag with an i pod shuffle (good if you get in a state that you cant go on lol), tissues, cereal bar, banana and phone. Thats about all you need. Dont have a bag on your back - it will drive you mad. Its such an amazing site - all those people walking for charity. Made me quite tearful at times. And yes the tea and breakfast after is the best meal you will EVER have lol. Although once I sat down it was hard to walk lol. No place for next year yet but its maybe a bit early. Happy to help in any way xx