My DD just turned 13 and that would totally freak her out.
Enjoy though! We love the spa! Even before she turned 13 they would sneak her in for a junior treatment if there was room. She's extremely well behaved and on the quiet side so they did a mani/pedi, facial and shoulder massage for her one trip. She was apparently so relaxed that she fell asleep.

I think that the spa doesn't like to see empty slots when they can fill them. We had to go into the spa and ask about treatment. I would never have thought to do it until I saw someone else in there requesting it and her DD was younger than mine.