Re: Camping and pumping
I'd get a thermometer for the dry ice cooler so you'll know how cold it is.
You might have to pump and dump for the first 2 days since you won't be able to freeze the BM. Then pump and put the BM in the bottom or coldest part of the dry ice cooler. (you might check the LLL website for storage guidelines)
You might consider a car adapter as a back up for your pump, or make sure that you battery pack has a really long life. My battery pack lasts through 1 pumping with rechargable batteries. Medela makes a car adapter.