Thanks for posting, I think I have to have that Minnie suitcase.
I have a standard 21" Heys suitcase. I can't speak for the Disney 18" carry on Heys bags but briefly regarding my 21" Heys: Extremely well made, light weight, durable. NO interior organization, no pockets of any kind. Opens flat, there is not one side that is a lid. Not good for sticking last minute items into while at the airport, not good for living out of in a hotel room. I can put an astounding amount of clothing into my little Heys case. I love my Heys but it does have some limitations, might not be the perfect case for everyone or every situation, but I love mine when I use it appropriately.