In every retreat, I experience the most mind-numbing boredom, severe burning fiery pain, full body bliss the likes of which I cannot even recollect properly and a huge gamut of sensations in between all of these extremes. I've misinterpreted the extreme experiences at given times and each retreat learn a little bit more about their true nature. I can then apply what I learn to my life when I experience boredom, pain and extreme joy and learn to experience each "properly".
The trick is finding the ardent awareness that allows you to stay there, on the path, without distraction. And then to learn how to stay that ardently aware as you go through life. Hopefully the retreat doesn't stay an isolated 10 day experience but its import, particular the technique itself, is something you can cultivate throughout your life, while sitting, walking, standing and lying down.