Drove through Red Rock Canyon around 3pm today, and there were little to no traffic. There are plenty of hiking trails, rock climbing, bouldering, and scenic stops.
Upon stopping in, I showed the park attendant my annual pass, he let me in and informed me the current price is $7 but will soon increase to probably $10. It is a 13 mile scenic drive. There is a camp ground on the other side of the street from the entrance but none inside of the park.
At the first scenic stop after the fee station is currently under construction to expand parking. But parking on other stops was not hard to find but weekends and holidays will probably be more crowded.