I will be travelling from BKK to DXB on a QF flight number but onboard EK metal.

I will be travelling from BKK to DXB on a QF flight number but onboard EK metal. As a Qantas Platinum frequent flyer do I have access to both the Qantas and Emirates lounges? And if so does anyone have an opinion as to which is better?

Yes access to both. As a guess, considering QF has not upgraded BKK lounges, I would go to EK's. 

When are you travelling?

The EK lounge can be quieter and has better food and grog, but it's closed for refurbishment until May, so QF is currently the only option.

Considering the Emirates lounge is currently closed, I'd be surprised if  Emirates where pointing their Business/First and Skywards Gold/Platinum passengers towards the Qantas lounge as it'd struggle to accomodate an A380-worth of premium passengers.

They therefore may be using a contract lounge such as one of Louis Tavern lounges or Thai Airways lounges (I believe TG & EK codeshare between BKK and DXB).

If you are flying before May, I'd enquire at check-in which lounge you can access as a QF Platinum.

You may be surprised, but that is what's happening.

Didn't know about EK lounge's closure, but at least it will be nice when its re-opened. Maybe the QF lounge will close once EK's opens.

Thanks, hutch and Happy Trails. Happy Trails, before May sadly, shame.

Happy Trails, any idea what date in May it reopens? As I fly this route reasonably often

Sorry, I was there two weeks ago and 'May' was all they said.

The BKK QF Lounge is relatively new; a decent size and nice.  I was there over January when QF were running the 747's and whilst the Lounge was busy - it coped.  There was a decent spread of drinks/food and showers are available.  Remember this Lounge was built whilst QF were still using BKK as a transit point for London flights.

Just saw this from Business Traveller site review that fills in some of the gaps:

"Having visited the Cathay Pacific lounge many times before, I decided to try the recently refurbished Qantas lounge.

The lounge was tastefully furnished with white, blue and brown sofas, chairs, coffee tables and high tables offering seating for up to 120 passengers. Qantas opens this lounge up to passengers of its new partner airline Emirates as well, which had two flights leaving that evening.

That being said, the lounge was rather busy but it was not a problem finding a place to sit and there were many members of staff quickly clearing tables and replenishing buffet items.

The buffet itself was a nice selection of Asian and western hot and cold dishes. There were two soup options, a Thai curry, a stew, various types of meat skewers, crab cakes, an assortment of canapes and a salad bar. I did not try any of the foods but observed that a lot of other passengers seemed to enjoy the offerings for they went for seconds and thirds.

There was also a wide array of soft drinks, fresh juices, wines, spirits and, notably, two varieties of Moet Champagne available."