Iuki.....thanks for asking an important question
I also understand the: not walking long part, & although I cannot help with your ECV issues, I know others will pop in to help. We stay close by an elevator when we can, so not to have to walk the long corridor. We have not experienced any extra noise either.
Getting an elevator will have a longer wait when you first board the ship,and, when you are ready to disembark. After dinner, and, the shows as well. Most people waill accomodate, getting you on first.
On Labadee, they used to have oversize wheels on push chairs, to get you over the sand easily.
Tell us what ship, and where you will will be cruising....