Yes, usually children are price as children until the age of 9, at 10, they are considered adults. Also, if you are traveling with little ones under 5 beware. A LOT of excursions don't allow children under 5, especially any snorkeling or sailing ones. So, if you see a child age range 5 -9, that means all children under 5 aren't allowed to participate. Some of the excursions listed at 3 - 9 will allow children under 3, and they are at no charge.