Yer EJ
Basically if you are coming off at Int 4 by Emirates Mall then head onto the Al soufah Road (which is the Junction of Mina A Salam/ wild Wadi) Take a left onto Al Soufah Road and just go all the way until you pass the Meridian Mina , then get into the left hand lane and take a left at the next lights. Marina Walk is 2/3 roads on your right.
Note to All drivers.
If you drive directly down Marina Walk, at the bottom there is a Valet Parking Service , and it's FREE. so dont bother parking on the road etc.