Go with the Air mattress, get an Ambien from someone...
Could be worse.. here was my quarters a few weeks ago with the Scouts
We had a blast !!
If no air mattress, get a shorti pad to keep heat in...but you'll be fine at those temps...
Enjoy, make it fun and an adventure, not a pain in the butt...
I see to many parents take all the fun away from there kids... it's only a weekend....
Not saying thats you..just an example...
Boys laugh at me.. If we can drive in and the site is close, I bring it all, air mattress, fans, heaters,+ + + depending on the time of year, if we have to pack in,, It's Mr Smith you ok with out all your amenities...;-)