If you're going from BKK, you might be interested in checking out Etihad, with whom I had a very positive experience. They only fly to Abu Dhabi, but limo transfer to/from DXB is thrown in for C and F (or coach transfer for Y) pax. Dubai itself is only remarkable for the recent man-made stuff as opposed to ancient remains or natural delights, but it's a nice enough place, everyone speaks English, luxury hotels and premium rental cars are about as cheap as they come and the absence of VAT and other taxes mean it's a shopper's paradise!
I only stayed a day or so in DXB, there will be posters like mtacchi who know the place better, but that's my take on it.
A shisa and cup of salep in one of the (airconditioned!) traditional cafes come highly recommended!