I might be there at that time for my daughters review although technically we arent supposed to be there until the 3rd but it looks like they have messed her appts up again.
When Tasha did her 2 week stay there was about 4 teens on her course. So it is unlikely that you will be stuck with loads or primary children!
Anyway you wont have time to be concerned about it!
Once they get their whips out thats it for you! No I am joking, of course you will be strongly encouraged to push through it all, but they do understand and actually being with other children/teens provides a distraction from doing the exercises! Its all done in a way that involves as much fun as possible, wait until D wears his tutu! Seriously its either Wednesdays or Thursdays, my daughter still laughs now.
I am sure they will take great care of you.