Do I need internet connectivity each time I want to watch the videos?

So I'm the biggest FB fan (LOVE YOU Kelli and Daniel!!) and have been working out using your free videos on YouTube for a long time. I'm finally ready to purchase one of your programs, FB Strong, and have even joined a gym so I will have access to a range of weights to use while following this program. My biggest concern is that the gym is located in a basement and does not have great mobile network nor wifi....will I be able to watch videos from the program once I've downloaded them to my Calendar, without needing internet connectivity each time?