Hi Purplepenguin,
DH and I split the cost. He paid for the airport taxes and the accomodation. I'm paying for all other expenses, e.g. meals, shoppings, etc. My dad very good. He went to change some yen too, saying that he wants to buy things for my DS and nephew. Of course, we know also for his siblings. He wanted to change more, I told him don't have to, at most use cards.