Hello & welcome to cloth nappy tree!
Wool is great over any fitted nappy. Night or day! I find it needs to be more lanolised overnight or you need to have your absorbency absolutely perfect in the nappy for it to work overnight.
We went camping for 5 days last year with cloth. Luckily we had access to a washer/dryer on the site which we used once.
We stuck to flips, itti's & BBOS pockets for us. We needed good absorbency as James was 18 months old and could widdle quite a bit at times, but had to balance it with drying times.
If you can use terries/ prefolds with wraps - then that would be ideal!