Probably not worth packing it.

IME the places taking Discover on Union Pay terminals is shrinking. I have seen a lot of new POS machines lately, many have a built in QR code reader for your smartphone to accept Wechat pay and Alipay. Most all of these POS do not accept Discover, even though they work with local Union Pay cards. I don't know if it's the chip reader problem or what. Neither chip nor swipe works. There's a fancy new orange color POS with a big LCD screen that seems particularly ubiquitous and definitely doesn't work with Discover.

There are multiple places where I used to use Discover that have switched to a new POS, and now I am out of luck. Quite disappointing.