I would suggest purchasing a mattress cover, they zip up and waterproof the entire mattress, I think they help with allergies as well. That way if it happens again you only need to worry about washing bedding and not taking care of the mattress again. I am not sure as to the age of your child...
I love the colors you chose and the work that you have done. I noticed a lot of IKEA stuff in there (my favorite store!). It's so neat to see all the work that you have done, it gives me so many ideas. Thanks for posting :).
Yes I bought one off CL already. Looking into electric blankets as well but it will be our only fall camping trip so may just e bringing extra blankets. I have warned all the parents to pack sweatshirts and jackets and stuff.
I love the idea of keeping a camping journal. I would like to use the clear plastic pages to keep information for each campground as well as keeping a copy of the user's manual and such. I think I will also keep a spiral notebook in it as well for thoughts and such.