You could rent a portable scooter that breaks down into parts. They work fairly well but are overall a bit smaller, the seat can be smaller, and the battery may not last as long. I think generally the heavier you are, the shorter time you will have with the battery and that's more of a consideration if you are over 180lbs. If you have concerns about that, ask the company you plan to rent from what they'd say about battery life for a portable scooter. I used a portable for some trips several years ago when we went to US/IOA and Disney (stayed at Disney and used our car to drive to Universal) and it worked well. Our old Honda Odyssey minivan could have fit 7 (adults or children) and a portable scooter) so perhaps a large ride share vehicle could also?
I guess the other option would be to rent the regular scooter and in that case does Mears or other taxi services have vehicles you can reserve that can load that type of scooter? I'd think you'd definitely need two vehicles in this scenario however.