After Steiner enters the gate, talk to Part-time Worker Mary and console her to get her to move. Talk to the Worker in front of the gate and then to the Earnest Young Man to get him to move. Pick up the Multina Racket in the chest on the left and then enter the alley (you won't be able to get the chest on top of the cart until much later). The guard will give you a Gate Pass before you go on.

At the cable car station, pick up a Potion in the chest. You can talk to Grimo the moogle here. When you're done here, board the cable car.