O.K. will do
Well, I carried three lenses around with me the entire time: the 24-70 f/2.8L, the 50mm f/1.8ii, and a 100mm f/2.8 macro (which I barely touched). I rented a locker, but only to stash my tripod during the day and then retrieved it when it started getting dark. I carried everything in my backpack the rest of the time (which I DON'T recommend if you can help it). Here's a pic of my gear (I didn't carry the flash though):
My back was killing me by about 7pm after carrying the pack all day (and the camera around my neck). When we take the family back in September, I'll have a small stroller to stash the pack in. Also, I think I'll leave the macro home and carry the 70-200 instead. I did miss the length more than I thought I would (still getting used to full frame and loss of zoom due to the crop factor).