I've added a page to the illustrated casino room key guide for keys from City Center, Las Vegas (sure, Aria is the only casino at City Center, but how can I resist including Vdara and hopefully someday keys from Mandarin Oriental and the Veer Towers?
). Check out the page at...
Please contact me by email if you have any additions or corrections to the information presented on the pages. Thanks to everyone for all of their help with the pages!