Reasonable disability

Check out this passage from a QandA (from one of my favorite newspaper websites) with cruise expert Douglas Ward:

"Q. How should vacationers prepare for a cruise health-wise?
A. You should be in good health, although cruise lines will take passengers in wheelchairs or those who are otherwise disabled (within reason) ..."

So remember, if you ever plan to take a cruise, keep your disabilities "within reason."

Who's responsible for a comment like that? Ward? The cruise lines?