Oh ok, so you are leaving to eat lunch then. That is what I do sometimes since I hunt so close to home. Especially if I have to use the bathroom. I don't mind peeing in a bottle, but I'm not crapping in the woods unless I have to

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Opening day though I'm getting in my blind at 5:30 in the morning and not leaving until the sun goes down. My blind is pretty nice though, it is sealed to the elements and I have a small heater. I also have a padded swivel bar stool with glass windows on every side. It's not like I'm sitting in tree stand during crappy weather or anything.
Paul