It’s true what you hear. You will not sleep. You may miss meals while on assignment. Be prepared for both. Bring some granola bars or other snacks to keep in your camera bag. Get some sleep before you get there so you don’t come in already spent. I hate seeing students sleep through some great presentations because they stayed up all week before the workshop reworking their portfolios, and they’ve stayed up each night at the workshop drinking crappy beer and chatting with friends. But when those lights go out in the barn, eyes close, heads go down… and a lot of powerful pictures and inspiration are missed.