We are a party of 14 including several different ages. It is possible/probable that we will not all be doing the same thing at the same time as the age ranges great grandparents to 9 month old great granddaughter. One person will need assistance. He uses a walker at home but would not be able to navigate the park without a scooter. I am trying to determine what will work and what won’t. From reading, we need to rent the ECV in advance. We are staying at the contemporary so magic kingdom is no problem. What is the best way to go to the other parks and Disney springs? Should we rent a car and have someone with him that can put the scooter together? It seems like the bus waits are long for an accessible bus. Thank you for any advice.