I've ridden through the park several times on my bike, and I've walked around it once to gain some knowledge about the mesa above and to the west of the park.
Today, we parked at the park, walked through it, and then went cross country on our own trail to see Las Vegas from the top of the mesa for which the Mesas is named.
The park has good parking, nice green spots for kids and adults, and some very nice walking areas. Since the Great Recession, the area has not grown as much as before and the park is often less busy than some of the other Summerlin parks.
It's a very pleasant place.