I have a National Parks Annual Pass, and go to Red Rock Canyon frequently. I had never heard of this FREE area, just before the park entrance, until recently. I brought som friends here last week (early November) and we all loved it! Great vantage points and a good mini taste of Red Rock.
While there is a boardwalk on the section we ventured on, you should know there are lots of nail heads sticking out of the ground, and I'm not sure how easy it would be to push a wheelchair or stroller on. I did see several people with strollers though.
Nice little loop, plenty of parking, the colors were splendid, and there were picnic areas. Definitely a win! I'll be back very soon!