Hi megsfield and welcome to the board, and also my first chance to answer something

. It may sound unfair but 29000 doesn't get you much nowadays, you will need around 55000 to get over to Bangkok and return. Don't worry, if you particularly like Thailand pick their national carrier TG, it more than likely flies out of your port, & on the Australian run they have new 772 and 773's. They will give 100% points for M/H, but be careful on the LX run there are no WTE or P and on the UA sector, no WST or Z.
You will be able to combine and get one free trip, or upgrade into Business class from 2 cheap economy tickets or get a couple of nights accomodation at somewhere like the Sheraton or the Dusit Thani. The upgrades are good because you will have access to the Bangkok lounge which is splendid and has Dom champers and you will be able to have a shoulder massage too. All in all makes flying back home a little more tolerable. Enjoy your flight regards bkkrop