HELP!!!

Im planning a trip to take a 15 year old sister camping. if anyone has any ideas of Godly activities to keep us occupied in the peak district, they would be much appreciated.
also, if anyone knows a decent place to take 5 sisters(ages ranging from 17 to 19 and a 'young at heart 45 year old' and any activities i could do with them...again suggestions would be greafully recieved.