DD took an "algebra camp" summer session when she was nine. Most of the other kids were TigerCubs 12-13yo.

I dunno-- she was rather underwhelmed, actually. She thought that the best part was the last day when the instructor went off on a game theory tangent and talked about set theory.

The other kids' eyes were pretty much glazed over at that point though.

Anyway-- I think that you probably won't really know without trying it, but I would share your concerns. The one that DD took was very much BILLED as a "boot camp, but fun!" and turned out to be more like "basic skills review-- lite!" instead.

Can I sign up for parkour, robotics, and CSI??
Schrödinger's cat walks into a bar. And doesn't.