Outlined hereunder are the terms and conditions of the 2020 Gold 50% award offer:

Valid one time only for Gold members or their listed nominee for 2020.
The ticket is valid for one year from date of issue - not from date of travel.
Date/ flight changes are permitted within ticket validity and subject to availability, for a fee of equivalent USD 70.00 per transaction. Fee is converted to NZD based on the current exchange rate at time of date change.
Please note new reservation change fees effective from 01 MAR 2020:
- TG domestic flights within Thailand: USD 16 per transaction
- TG International: first class & business class USD 120.00 per transaction
- TG international: economy class USD 85.00 per transaction
Name changes, destination changes, re-routing and carrier changes are not permitted.
If you wish to cancel the booking and re-credit any unexpired miles, a fee of either (equivalent) USD190.00 or 15,000 ROP miles applies. However please note that the 50% special award offer cannot be used again, as the right to use is forfeited.
All re-credits are subject to THAI Head Office approval.
Expired miles cannot be re-credited.
Booking fee USD 10.00 for members (or USD 40.00 for award nominees) applies