First of all, welcome to FT!

You might be better served posting this in the "Middle East" or "Emirates" forums. I've only transited through Dubai (DXB) twice, and I don't think 6 hours is really enough to leave the airport and do anything. The airport has plenty of shopping and other distractions though (something to look into). If you really want to spend some time in Dubai, I would reccomend something like 20 hours and not overnight, so that you can get a full day to see things (probably from inside a bus due to the heat). My sister did a 3 day stopover and loved it, did a desert safari amongst other things...

My other layover was an overnight one and it was just enough time to get into a hotel, sleep, do my morning things and get back to the airport. All I saw of the city was through my hotel van's window...