I prefer to just take a set of insulated camp booties (I think we have a variety by wiggy's, cabelas, and Sierra designs floating around in our gear closet). Very packable and lightweight, moisture resistant but still insulate even if they get damp...mostly use them in the shelter, or to go outside in the evening. If walking around the campsite a lot I usually just wear my boots tied loosely. I stopped wearing crocs a few years ago, as they either don't breathe (if you go with a holeless model) or get your socks wet if the grass is damp (the holey kind). Plus they have almost no traction on wet grass or tundra. Know there are lots of diehard croc fans out there, so just my $0.02.
If we are pack rafting or crossing a lot of deep creeks I usually bring a set of lightweight sneakers along anyway, and they can double as camp shoes.