Yes, there are multiple peaks in the park. The best part is that you don't need to be at the top of a peak to get a good view of the sea of dunes. Although, my best view of the park was sunset from the highest peak in the park (star dune). It took us about 2.5 hours to get to the peak. Totally worth the hike.
Yes
Yes. Also boarding
You can but the sand gets very hot make sure you keep your shoes on and have plenty of water
Yes, you may climb up to the peak!
Yes, the park is very fragmented but there is a place to hike off of the west entrance parking lot and further East as well.
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