If it is wider than 32 inches, I would not bring it.
Most doors and wheelchair pathways are 36 inches wide, but according to the ADA guidelines, they could be as narrow as 32 inches. The definition of "common wheelchair" that is used in the ADA guidelines is "mobility device does not exceed 30 inches in width and 48 inches in length".
Even though
ECVs look really wide, most are only about 24 inches wide. According to the specifications, these 2 really large ECVs are 25.5 inches wide.
This kind of large scooters have trouble negotiating many of the lines because of their width.
UPDATE: I went to the
Kidarooz website and in the 'features page', it lists the dimentions as 42 long x 33 wide x 32 inches high. I don't know how tightly it turns, but you would need to be able to turn within a 5 foot space for the turns in attraction lines.
If it really is 33 inches wide, I would suggest not bringing it, especially if you are planning on using it as a 'Stroller as a wheelchair'. Even if it is narrower and is allowed, it would be a better stroller for parking and leaving than for trying to get into buildings or lines.
My DD's wheelchair is 24 inches wide and gets thru lines fine, but even with that, some of the turns can be tight. I would not want to bring anything that is wider than 30 inches at the very most.
Just for reference,
this video shows a scooter that I know from the specifications is 30 inches wide. You can see that it is rather tight through doors and the wheelchair gates to get into the park.