how do you go about renting a scooter ? and what are the requirements ?

You can rent a ECV at one of the rental counters. They are $50 per day with $20 deposit. You must be 18+ with valid ID to rent. However, you can't travel between parks with it.

Stop at guest services in front of the park is one option. Another option is to rent from a local Rental and have it delivered to your hotel for as long as you r staying