You will work 30 hours per week. You will get public holidays off and 3 days extra vacation days every 3-months. These vacation days must be discussed with host family at least 1 week in advance. Different families have different wishes. You will sign a clear contract about working hours when you start. When the host family travels, of course, they will like to bring you with them because you will be a good friend or brother or sister to their children, and you can teach them a lot during the journey. The relationship will just be better.