Now as Khanan has already posted the thread for our last year's Fuwairit Trip...here is the link for our trip to Zikreet. Have a look and then decide. Both the places are worth visiting.

http://www.qatarliving.com/node/948615

For 4X4s...do the sharing. Decide one place to gather (e.g. Landmark for Fuwairit & FFC, Rayyan for Zikreet) and then some of you can leave their saloon cars in the parking and can adjust with others having 4X4.