Sounds good, sadly my dad is only 45 and I'm only 23 so no special cards for us, I do like to keep all my different transit cards though. I frequent the DC area and have no issue using a smartrip and topping that up, is it really more difficult than that? And can I get a yikatong out of a ticket machine or do I have to purchase it from a window? I have friends in Hong Kong, and know getting an octopus at the airport station is no problem. But Beijing I imagine I take the airport line, transfer at dongzhimen onto line two, which is where I imagine I could buy one?