At home DS1 sleeps in a bedside cot and still wakes to feed 3 or more times in the night.
Our tent has 2 sleeping pods, 1 will have 6yo DS1 in, the other DH and me. When we first took DS1 camping he had a travel cot in the other pod but by then he was sleeping through so there were no night wakings to contend with 
So, I'm imagining it'll be easiest to have DS2 in with us but am wondering how best to keep him warm and avoid him getting squashed with us on the airbed. Maybe put the travel cot mattress by the side of the air bed?
Any nifty tips from more seasoned campers gratefully received!