Are there scooters to rent and where?

Yes there are, at the mail enterance.

Yes

Yes look for the Kiosk it will tell you where.

There should be a kiosk at certain entrances. For a fee you can rent a scooter or stroller. As far as i know at least for renting a stroller they charge you a deposit as well. If you use a credit card they will give you cash back when you return it. So keep your receipt

Yes, they are at the mall entrance.

There are scooters and strollers available at many of the entrances.