My Goddaughter did that for her gap year - with a female friend - Brazil, Uruguay, Argentina, Chile, Peru, Galapagos Islands, NZ, Oz, USA back. It was when she cleared Peru we all breathed a sigh of relief. As an emergency she had a duplicate of my Amex (Dad having agreed to settle it), the logic being she would use mine for that and not for cheapo Buenos Aries Fendi handbags on Dad's card.
Since then she loves to travel, Cambodia and Laos her favourites - but she doesn't half do it in style - has all these friends who Dads are so loaded, they fly them out Business - then she/they goes to work on fluttering her eye lids and fly upfront! Different generation, she has had a bf working in Dubai and doesnt think twice about flying out there for a long w/end - mind you she is a lawyer in the City now, so can afford it.