I am NOT a friend of TG and usually very critical.
My very recent experience (and two other journeys of friends of mine) give rather an image of motivated crews (but this is luck) and the bedding is now finally acceptable.
You can preorder catering and some choices are quite good
http://www.thaiair.com/AWR_PREM/view-trip.jsp. I noticed that they have no menu cards, but the wine choice was good and well presented.
So the value for money was good. Just noted that some captains still choose to light cigarettes during flight
(you notice that on the A340). After my complaint it did not happen again on that flight.