Yes, pretty wooden acting from the children, but I think that was pretty common 34 years ago! However, it's still a good film.

Regarding the likelihood of any parent allowing their children to do what the Walkers did, even at the time - my uncle aged 14 was allowed to take his two younger brothers (10 and 8) overnight camping in a very similar boat on the Solent in 1926 - a far more dangerous place to sail! They were all "not duffers, didn't drown".

I think the film still appeals to younger kids. I took my god-daughter and a friend (8 and 6) to the island in a small dinghy with tan sails, and we lit a fire at the camp ground and filled a kettle from the lake, just as the Walkers do in the film. That was in 2005, and they loved it!