Here is the official check-in location for the 2015 Arizona Treasure Hunt. After all, Westworld is a big place. Monterra of WestWorld 16601 N Pima Rd, Scottsdale, AZ 85260 33.633232 N 111.884714 W
Check-in will be on the East side of Monterra at Westworld. There are two possible entrances: 1) Off of the Frontage road of the 101 coming north from Frank Lloyd Wright, or 2) South on 94th Street from Bell Road.
And just for a little extra entertainment (or otherwise) as you collate the pages in your 3-ring binders...