The whole film was spoilt for me at the end, when it showed a journey in a 1970s railway carriage. Many heritage railways could have produced a 1930s carriage if asked. Instead the producer seemingly thought any old carriage would do. It also akes me wonder about the boats depicted and whether they were genuine 1930s models or not. I think big budget films such as this one have a duty to ensure the"props" are as authentic as possible. I am aware that most people don't know the difference between a 1930s railway carriage and a 1970s carriage, but frankly speaking that's not the point. Authenticity matters.