@margot31 - Am I correct that you will be taking your own (personal) vehicle to WDW?
Then the main thing you need to know is how heavy the heaviest part of the scooter is, when it is broken down. On average, that's about 50 pounds.
Before you tell me that 50 pounds is no problem because your kid weighs XX pounds, remember that 50 pounds of "dead" weight and 50 pounds of "live" weight are two very different things. You have to be able to lift 50 pounds off the ground, and up over the sill, and into the trunk or cargo area of your vehicle.
As others have said here - renting from the Parks is an option, but you cannot reserve Parks
ECVs; it's first come, first serve, and it is not uncommon for them to be out of ECVs.
If you are staying at one of the WDW Resorts, then having a local vendor deliver to the Resort (or they can - if you rent during regular business hours - meet you at one of the theme Parks) is the typical thing to do. Then you can use Disney's internal transportation, and you don't have to move your car from the Resort, and you don't have to take that thing apart, and then put it back together every. time. you. go. somewhere. (It gets old. Fast.)
If you are not staying onsite, then you may have no other choice. If that's the case, then I would identify (with the help of the rental vendor) what model you would potentially rent. Find out what the heaviest single piece is, and make sure you can easily dead lift that in and out of the back of your vehicle. You may even be able to find the Owners Manual online, and study it prior to arriving at WDW, so you know what to expect. (Sometimes you can even find
YouTube videos on how to assemble/disassemble a particular model of scooter)
If you have any other questions, let us know - I hope you all have a lovely time in December!
