In camp don't wear anything wet on your feet.
Something really comfortable and dry.
Sleep with bare feet. No socks.
Loose smart wool socks is certainly the smart thing to do on the river.
For sores in that environment go early on with what they put on cow udders.
There's moleskin and duct tape and bandaids and change your socks three times a day. I used to treat blisters in fire camps. I've recovered from that stress. All better now.
Bag Balm is not appreciated by our generation.
You could fix that.
Bag Balm in your med kit.
Since 1899, Bag Balm has been the farmer's friend helping keep dairy cows from becoming chapped
The advice to wear stuff off the river that you will later wear on is very very good.