we did 6 weeks around NSW with a then 6mth old and a 3 1/2 yr old camp trailer was fine
last year we did 6 weeks with a 18mth and a 4 1/2 yr old in a caravan was best ever.. we could put the kids to bed and sit out under the awning.. we had no dramas packing and being gone by 10am .. if not earlier most days we tended to stay 2-3 nights most spots with full on days, we did a couple of 1 nights stays again no dramas, its just a matter of going with the flow you knwo your own kids you know if they need to get out and run for a little while travelling do it they will have a great time