Although I prefer Shimmers as best beach shack, Beachcombers (as part of the Jumeirah Beach Hotel) is definitively the best buffer restaurant, I've been so far in Dubai. The restaurant is located at the foot of Burj Al Arab and has a bit of a different theme each evening. Choice is big (although not as big as in Latitude, the other buffet restaurant of the Jumeirah Beach Hotel) and the outdoor seating is great. In the weekend, a small band is playing to increase the atmosphere. There is a separate kids room with video, so that parents can enjoy themselves even more :)
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