Caspian's understanding of rules

We were reading a pamphlet for a mini-golf place in Queenstown, and it said "Ages 5 and up." We explained this to Caspian and he said:

"Can we cross it off? That would work, okay?"

Meaning: if we cross it off the rules, and then show them the pamphlet, would it still apply?

It turns out he was able to talk the nice person behind the counter into letting him play anyway. And, for tracking purposes, he ends a lot of sentences with "okay?" at the moment.