There are so many sights and sounds in downtown Las Vegas that kids can appreciate, but parents should use their discretion when bringing their children to Fremont Street. It can be crowded, especially if there is a live concert happening on one of the Fremont Street Experience stages. There’s a curfew for unaccompanied children under the age of 18, as follows: Friday and Saturday, 9:00 p.m. to 5:00 a.m.