We water it randomly, at one stage we estimate we forgot to water it for around 6 months. Other times due to a lack of communication we have both watered it multiple times in a week. It appears to be invulnerable to poor watering discipline.
Currently it is living in direct sunlight but it has lived in permanent shade for a extended period as well.
I don't know why I'm telling you this, it probably doesn't help knowing that your friends has high maintenance plants when there are invincible ones like ours in the world as well.