We are going travelling for several weeks in Thailand and Malaysia next year. We will have our 10 and 7 year olds with us and I want to make sure they will have some entertainment on very long bus journeys where there will be no wifi. I am planning to buy some kind of tablet device and download films for them from our Amazon Video account or iPlayer but my research so far makes me worried that I will download loads of content for them and then it will fail to work at the crucial moment due to being in a different country from where we live. Lots of people seem to have this problem. Some people recommend VPNs but I don't know anything about them. Can anyone suggest the most foolproof method for taking films/entertainment with us please? I'm starting to think that their portable DVD player might be the safest option but it's a bit of a heavy brick and won't allow them to do school work etc.
Any advice would be hugely appreciated. TIA.