My kids, when they were that ages, really liked the go cart places. Fun Spot one, close to Universal has a good track, then another one little further away. Also, my youngest, 17 year old, keeps asking to go up in the Eye. That complex not far from Universal either, and next to the Eye is a small aquarium and wax museum, that may also like. Free parking there, and food options too. And, I would say, spend time in Hard Rock pool. My kids like hearing the music underwater, and well, unless they do not like loud rock music, the Hotel pool gives off a teen vibe. And agree, the little golf courses in Ciry Walk, as well as the AMC theater, are both a hit with my adult and teen kids.