I think the issue is with those kids who sometimes measure up and sometimes don't, from ride to ride, all of which have the
same height requirement. Better to just firmly establish for yourself before you go whether your kid is going to consistently hit the height requirement
or not, so you can avoid disappointment. This conversation really only applies to those kids who are right at the 40 inch mark, and may measure a bit shorter from one ride to another. Nobody is suggesting we put 5 inch heels on our 35 inch kid.
As previous posters have pointed out, the measuring signs are not always level with the ground, etc.
My kid has at least a dozen pair of shoes. She is a different height in every pair of shoes. I'll find the tennis shoes that have the thickest soles for this trip to avoid disappointment since she is literally 39.9 inches tall right now, and we have a month before we travel. I don't think that's cheating or going against the rules. It's just logical.
But no, arguing with CM's does not set a good example for my children (and ruins the day), so I won't be doing that if she doesn't measure up. We are preparing our 39.9 inch princess that she may not get to go on Space Mountain. Expect the best and prepare for the worst.... that's the best advice I've got.
By the way, the Skechers are just regular tennis shoes with a slightly thicker heel. It's not like they are elevator shoes.
If you want to see a really nasty argument on this topic, go here.
http://community.babycenter.com/post/a21186289/shoes_to_add_height_for_amusement_park
I'm glad DISers are so much more respectful than the people at this other link.... but if you are like me you may see some humor in it.
P.