Our adult son with Down syndrome (20 years old) needs to have a babysitter during the rehearsal dinner and wedding reception of one of our other sons. The primary responsibility is keeping him safe in case of an emergency. He only eats yogurt by mouth, so giving him yogurt is the only mealtime responsibility. He can use the bathroom by himself. Since there is no cell service at the venue, we don't feel comfortable leaving him alone in our cabin. The venue is Waterfall Lodge and Retreat in Ben Lomond.