i would get there BEFORE the store opens. ebay re-sellers will be standing in line, they may even hire homeless stand-ins to wait in line for them to receive the bracelets for them.
also your store wont be getting everything from the collection, only the "flagship" stores get most or all of the collection.
there's no guarantee you'll get anything actually.
people in the US are allowed to buy two items of each style, so they can buy the whole collection twice over and many re-sellers intend to do just that. so just beware.