1) Any seats assigned should be clearly visable in the TK app or website. For minor schedule changes, TK will not (invol) rebook to a partner flight if there are still reasonable TK flights to your destination. You can invol. rebook to other TK flights.

2) You can rebook despite the miles used had expiry date 31 Dec. 2023 - as long as you don't cancel the award to have the miles redesposited.