You can get return times on some rides, but other rides make you go through the queue with the scooter. It just depends on if the line is accessible or not. Having a scooter will not shorten your wait times in any way though. If you want shorter wait times, you may want to get
Genie+.
I would take a look at what rides have Lightning Lanes on Genie+ and see if those are priorities for your family and decide from there.