I mean the sort that churches run with volunteers for a pretty nominal cost. At the end of my local one every week the same people sit on their backside whilst everyone else pitches in.
This obviously excludes anyone who might find this difficult (we sometimes have grandparents and I completely understand they may find it difficult). But the people who have happily been running around after their children until tidy up time comes around. Am I unreasonable to think they should get up and help?