<grumble, grumble>
Yeah, lots of vagueness. Are they going to reject something handheld because it is inflatable? Prolly not. I'm with others in guessing that it is meant for things like inflatable Spaceship Earth costumes.
Drags the ground? There goes the Sea Witch and Belle costumes I saw.
Short capes? Wanda, Vision, and Elsa on Line 1.
Layers? Ambiguous, and I think an example of rD daying "We'll know it when we see it".
Don't want a bunch of linked-up runners? Yeah, I can see that. Not sure though how it has been affecting other runners.
I think that it what makes this so annoying: not knowing what is driving this decision. Is it solely because of a concern about weapons? Did they already have an incident or did someone just raise a flag of concern?
It probably won't affect any of my costume choices, but I still have questions.
I can say that I did go straight from the 5k or the 10K last year in my Mr I attire. I was hoping for a photo with Elastigirl since she wasn't out on the course when I went by. There was a special needs girl who thought she was seeing her favorite character and I did pose for a photo for her. I'll be darned if I was going to be the person to spoil the moment for her. Otherwise, I don't think I was in any danger of anyone mistaking me for the Disney Mr I. Maybe Bob Parr before he got back into shape...
Again, it would be interesting to know what spurred this.