Traveling on ferries 3-5 times per week, everybody who has a center stand uses it. Not having a center stand was one reason that I sold my Kawasaki KLE-650. Part of the issue is that the ferry personel may squish you into tight spaces, and the center stand makes that a bit easier.
I guess I gotta be different.
Whenever I take the Point Defiance/Vashon ferry, I never put my FJR on the centerstand and my wife doesn't put her NC700X on the centerstand either. It wouldn't take much of a bump to knock the bike forward off the centerstand!
I kill the engine with the bike in gear, release the clutch lever, roll the bike forward to take up the slack in the drivetrain and then plop her over onto the sidestand. They would need to crash into the dock to knock the bike off the sidestand with that method (and I seem to remember a ferry doing exactly that a few years ago).