How to Survive

I was interested at the end of the film to see if it had any connection to a real story but I'm cannot find any reference on the net or in the film. So this is fiction......a good story.....Another aspect that attracted me to watch the film is that I watch many survival programs (Bear Grylls, Naked and Afraid, Duel survival, Alaska Bush People, etc, etc) and I watched in concern that these people weren't written with many survival skills. I guess, since they were written to be "normal people never expecting be in that situation" and to have quite a lot of supplies (some food, matches, fishing poles, knife, rope, etc) that this was intended to be seen less for the survival aspect (from the title) but the drama between the four people involved as they realize over time (and agonizing a viewer like me WAY TOO MUCH TIME) that no one is coming to get them and they must act to save themselves. If you like a medium drama about survival, this film will be entertaining to you.