Originally Posted by
Gaucho100K
My guess is that you should be OK to use your HK.passport upon EZE arrival.
Do you hold a.SAR travel document or is it one of those cuasi UK passports....?
My American friend who just traveled to Argentina from U.S. told me that
the airline checks if passengers have the payment receipt before
boarding the plane from the U.S. So it is not an option to show the
second passport at EZE. I wonder if showing the second passport
that is not registered with the itineraries is an option; will the
airplane employee takes it?