I strongly recommend this company.

We hired a rooftent at Overlando to place on top of the 4x4WD car we rented elsewhere. Great service and clear communication. The tent was in perfect shape and really easy to set up and use. When their minivans are rented out (as is our case), a perfect alternative would be to rent a rooftent and the camping gear at Overlando, to place on top of a car rented elsewhere (discuss this with them to make sure it fits:)). I strongly recommend this company.

Overlando