All, thanks for the replies. Did help to prepare me for the transit.
Just to reconfirm: Did the run last weekend with TK, and as other posters mentioned it is a very simple process. Everything is within the same floor. [Even Visa on Arrival- around the corner from the duty free shop.]
In my experience, I don't think that there are so many people doing MR to KWI, so when I approached the transit desk, I was immediately recognized by the agent. Boarding passes provided without any further questions (except small talk on why I am doing this).
As a *G member, access to the Pearl lounge was given. Lounge is ok, it opens at 6 am, but you will have to wait about 1/2 hour before setup is complete. For those interested, lounge is OK. Big with big comfy chairs. Food is not too bad. Shower facilities are available, but looking at the cleanliness, I would not use them unless really needed (the one I saw had lots of hair in the drainage).
All in all, an easy experience. Hope this info will help others in future when transiting at KWI.