I'd really be worried about fixing an awning. We looked at it but there just anything that I would deem structurally safe to attach it to. I'd hate for a single gust of wind to take the front of your 'van off.
We went with an banana umbrella so the base is out of the way but even then we haven't used it that much. Also they are not stable in the wind. Rocking about all over the place.
How about tying a pop up gazebo and then securing the lines down to the base of the van. Should stop it from blowing away and some of them are very sturdy and quick to pop up and down.
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