FlixBus 订票10% off折扣码，不知道是否可重复使用，成功使用者请留言。
看说明是必须使用手机APP订票，网页版恐怕不可。
"Save 10% on your next FlixBus booking in the app using this voucher code*:
CRL84U7NU4
Get inspired by our new connections and let's roll!
*The voucher is valid for one month and only applicable in the iOS and
Android app."