You won't be disappointed! I think the 777 has their new J which is fully flatbed.

Service is attentive, not too fawning, pretty efficient. Before take off they will take your drinky order, and also your meal order. The drinky follows after take-off, the meal follows - restaurant style (no tray), no messing around, whipped away as soon as you finish each course and onto the next one. Quite, quite excellent food which will reset your expectations.

For some reason, always tend to find QR flights contain quiet, modest, well-behaved passengers. I don't know why I'm mentioning this, it's just that every flight I took on QR has been relaxing from start to finish.

The Premium Terminal works very well. You will be bussed to it from the plane. Don't get off at the first stop, that's the regular plebs' terminal. Exceedingly comfy and the PT also has its own private duty free shopping area (DXB take note) which can be handy. Boarding takes place direct from the PT - you don't need to go to the regular gate; you "board" the bus, which takes you straight to the plane, you climb the steps, you briefly notice that the entire plane in Y has already been boarded and are patiently waiting for you to come. You sit down, drinky order / meal order / off we go again.

Recommended.