AA will absolutely let you book to Easter Island as a South Pacific award (15/30k). Because you can't transfer via a third region (in this case the logical option would be to go via SCL but not allowed), you're confined to the OZ-AKL-PPT-IPC routing. AKL-PPT is on Air Tahiti Nui and PPT-IPC is on LATAM. As flightobserver points out, PPT-IPC only operates once a week early on a Tuesday so you'd need to leave Australia on Monday and probably overnight in Auckland. As a side note, the time zone changes are interesting with this routing - you'd arrive Auckland on a Monday night, leave Auckland on Tuesday morning, arrive Tahiti on Monday and then leave to Easter Island on Tuesday!
The reverse routing to get back from Easter Island isn't possible on one award because there's more than a 24 hour layover between the weekly flight IPC-PPT and the next flight on TN from PPT-AKL.
I think the award tp Easter Island represents outstanding value, and have regularly been checking availability for ages - it'd be an excellent alternate way to get to South America (buying a separate IPC-SCL flight). However the catch is availability on the PPT-IPC leg - I've almost never seen availability. LATAM is weird though - every now and then there will be wide open availability for travel on the route during a certain month , few weeks etc. And then it will disappear.
In 2015 i was actually successful in putting an itinerary (three x 15k awards =45k) MEL-AKL-PPT-IPC, IPC-PPT (stop) PPT-AKL-MEL on hold, but chickened out because:
- the PPT-IPC flight is only weekly and a week is probably too long on Easter Island.
- that much flying and time zone changes would be fairly brutal, especially in Y.
- there's only a connection in PPT of a few hours on the way to IPC, I was worried the flight in from AKL would be late and I'd then miss the connection and be stuck in PPT for a week until the next flight, or have to just give up and go home.
i haven't looked into Guam but believe it's impossible to visit there on Oneworld without transiting a third region (Japan / Asia 1), and therefore can't be done as a South Pacific award