oneworld - Visit NA question

Resident in Australia
Ticket to NA issued in CMB (on CX) (good price in D class^)

Questions:
Do I have to have Visit NA tickets / coupons issued in CMB?
Can AA RTW desk arrange if given the CX ticket number?
Could a local Oz TA issue if they can reference the CX number to verifiy?

Why ???

The Visit NA segments are now cheaper than the online Q / N / S / V class
fares.......

Maybe I should quit wandering....

Fred

Some more questions on the same topic.

1) Can you use a Visit NA pass if you are a citizen of a foreign country outside the USA, but resident in the USA itself?

2) Could you buy a Visit pass (for NA or any other zone) if you had a corresponding award ticket on a oneworld airline into and out of the area in question (ie. could you buy a Visit Africa pass to go with an award on BA into and out of CPT?)? Or must the corresponding international flights be paid tickets?

3) What booking class do these visit passes book into?