ArkyKenny on 8/22/2012 1:23:08 PM:
Helmets are not mandatory, so there are no helmet police. That said, you will probably be riding 10-15mph on surface that is loose on top, and has a lot of transition areas and irregularities. If you're not used to carrying a load (i.e. panniers), that adds yet another dimension to the ride, and your stability.
I wear a helmet because I only have one head. I'd suggest that you do the same and protect your melon.