We did the one hour sand rail tour, which turned out to be one of the most fun things I've ever done! After getting strapped in they speed up and down the dunes, sometimes straddling the sides. The buggy goes up to 60 mph as it zips all around. You think you'll flip over at times because you're just clinging to the edges of the dunes, but you never do. We had beautiful weather the day we did it. At one point they take you along the beach, and we saw a seal in the water just looking at us as we cruised by. This tour was nothing but fun and much more exciting than I expected. Definitely worth the trip.