UA_1K_NZ - First, welcome to FlyerTalk. I am not NZ-based, but let me make some observations about ROP Gold status. This basically requires flying 50,000 qualifying miles in a 12 month period (not necessarily a calendar year). But discount economy fares may earn only 25% or 50% qualifying miles! Then a ROP Gold upgrade certificate is only valid for the member, and not for say a spouse. It requires a purchase of a mid-fare economy ticket and needs discount business class to be available. There are also taxes and booking fees. Once booked, there is a change fee. I have found GUP certificates difficult to use. They always require a phone call to Thai customer service, but availability can be checked on-line. Good luck. (I am also a former UA 1K member.)