Are any of you 'Red Hatters'?

If you are, what do you get up to? Is it fun or do you feel silly wearing purple and a red hat?
I am contemplating becoming a hatter, because I'm quite delightfully mad, yet also, delightfully cognaisant of the fact that I choose to be so!
So, if you're a hatter, 'fess up please and tell me what I'm missing.