Just come back, isnt as bad as people think when it comes to general rules, just be respectful and dont do anything stupid. Americans are the worst for this from what I witnessed over there.
The Burj Khalifa At The Top Tickets make a good little trip, I suggest booking an evening trip but do book in advance. Makes a good day out as it is connected with Dubai Mall, so me and the Wife spent the day there going in the Aquarium, Ice Skating, Spending Money and Eating.
75 Min yellow boat trip, it leaves from Dubai Marina Walk side, very good trip at not bad prices, takes you down the Marina, out into the sea and gives good views of the Palms, Atlantis hotel, Burj Al Arab etc. Worth it
We swam with Dolphins (Wife wanted to do it badly) was a good day, went into the water park connected to the Atlantis so made a day of it, if you like water Parks goto Wild Wadi though.
If you want to goto a Souk, goto the Gold Souk near the Creek, the one near the Burk Al Arab is useless.
Another top trip I suggest is the Evening Safari, some good dune bashing to start then a lovely evening in the little camps they have scattered about. Really enjoyed it.
We done loads of stuff out there but its all down to you, the hotel should have a reception area for booking and suggesting trips.
What hotel are you staying at?