Do I need an aisle with a handrail?

All current safety codes require an aisle and handrail for a bleacher unit with more than 5 rows. In addition, we have found that larger units of 8 rows and up, the upper rows will not be used efficientily if a handrail is not present. Patrons are not able to get to the top without climbing over rows and those already seated. ParknPool highly recommends an aisle with a handrail.