Thats what I did. Charged it to my room. So much easier this way than carrying an extra 'thing' on your wrist. With the size of that card, its bound to irritate the crap outta me pretty quick.
Did you see the size of the card thats attached to your wrist? (see pic above). I dunno why anyone would want that card dangling from your wrist during F&W...if your not a disney resort guest then i get it. You have no choice. Its just so much easier for disney resort guests just to use your magic band. But hey, to each their own.