We booked a Segway tour for my husband for Father's Day. He did the 8:30 a.m. tour Thursday and LOVED it! I booked it in May, so I doubt you have to book really early. We got a 15% DVC discount off the usual $80 price. I don't know if there is an AP discount too. Make sure you have ID for your son. My husband said a woman with two boys were turned away because they did not have any proof that they were 16.