No probs JBL, hope all goes well.
I know the coastal path quite well having walked most of it as a youth with Scouts/Ten Tors trg/Duke of Edinburghs, and it's a great part of the World.
I guess we could have made it more difficult if we blindfolded everyone, or tied their legs together!
Or by simply giving a distance to walk that would mean, to achieve the aim, they'd have to walk at a speed greater than 1 mph.