I wasn't sure, so I signed up for the intermediate course. There are four of us: my 9-year-old, my 11-year-old, my husband, and me. The intermediate course felt more like a practice session and lasted about 30 minutes. The guide took photos and kept us entertained. The children wanted to play more, so we signed up for the advanced course. It was great that we only had to pay the difference in price. The trail was very enjoyable, and the guide was kind and helpful despite his limited English.