I went there a couple of years back and regret not going up the Burj Khalifa.
Go to Dubai Mall and see the Burj Khalifa, the musical fountain (at night), biggest fishtank and some overpriced English shops
Go to the Souks (markets) in Old Dubai near the Creek - if you go, see if you can find some chocolates in the spice souks - they look like the stones that you put in fish tanks - taste delicious though - trust me
Madinat Jumeriah - Thai food but quite expensive: Pai Thai - make sure you book. You have to get a boat across to the restaurant. Plenty of other places to eat there too.
Atlantis Water Park - I didn't go to Wild Wadi but Atlantis was brilliant
Chi Nightclub was good if you like that kind of thing.
They also have all you can eat brunches out there.. they are also all you can drink. Never had one but apparently they are amazing.
Enjoy! I didn't think I would like it there but really did
BB x