No special access issues
If you drive a car, park in Çirali village. There are possible parking spots close to the bridge. If you walk from Olympos, you need to buy a ticket to Olympos Ancient city (40 liras), free to access after 17.00. Walk along the beach until you see restaurants, turn to the left and follow the river. There is huge rock on the way to the Çirali village, passage is possible via a ladder, but it is badly secured. You can cross the river instead.
From Çirali village, walk the main road and walk through one of the hotels/campings. The owners know about the climbing area and are kind, but ask for permission.