Willingness to be conscripted? Different styles of dress? Different approaches to life? Sure it would be a culture shock and strange, but the culture as a whole would not be alien. If we had a day just to shadow/hang around in the company of these people (you can still travel to areas where people practice indigenous lifestyles, for example) we would find them to be not much different than us.

Despite their strange practices, this is what is normal to them, and they aren't any less human whether in the form of perfection or fallibility. They worry about the future, love their families, have wants and ambitions, get angry sometimes, and have their biases. We would find them to be comically relatable to your life, just in a different form.