I sincerely appreciate the gesture of adding additional keys to the RR ... but the prime purpose of this fun activity is to keep the RR duplicate-free as it started out. When the RR becomes contaminated along the way with dupes or NON-CASINO keys, it diminishes it's value to the next person who receives it and possibly encourages the next person to insert more dupes and/or Non Casino keys and might also discourage potential participants for signing up for any follow-up RR's.