I have no idea how difficult it is to get FF tickets to Taiwan, but I do know that it is fine to change your return dates on the tickets (as long as you don't change the routing). We have changed our return from CPT 3 times so far, no problem. The catch? You will be much better off doing an EasyPass reward to make sure that the seat is yours when you decide to return. Also, keep in mind that ticket is good for one year from date of issue, not first travel, so have your ticket issued as close to your outbound date as possible. For example: If you are leaving July 15, and issue the ticket July 10, you will need to make the return flight prior to July 10, 2004. Good luck!

Robin