Originally Posted by BrisbanePE
The general consensus in the past (do a search) has been that if travelling on a ticket that includes both intl and domestic segments then the intl allowance will apply. However if seperate tickets/pnrs then you'd have to plead your case at check-in.
What he said!
Usually explaining that you are on an international ticket to the check in agent is sufficient. Yet another reason to have a half done RTW ticket with you at all times