My youngest is 3 1/2 and measures almost 39" flat-footed, but can easily measure 40" depending on which shoes she is wearing and how her hair is fixed. Has anyone ever had problems where they had to remove shoes from a child to be measured? Does anyone know what the guidelines are when measuring?

I'm assuming they won't be asked to remove shoes to be measured, but I've also heard that '40 at home is not the same as 40 at Disney'. We practice standing tall to be measured a couple of times a week.