Same advice, plus one detail: check what happens with volunteers who are not staff. In our case they are covered only if they are registered as such before the activity, and that is a form nobody fills in until the day it matters.
Mountain viewpoint, 1,900 metres, forty minutes from the village. For a child of eight: the walk is short but the temperature drops fast after sunset, so a second pair of socks matters more than a telescope. There is parking for about fifteen cars and no toilets, which is worth saying out loud.