Here is how I was able to solve this mystery. I found several pictures from the Hotel's first anniversary which were taken in August of 1957. The "official" grand opening of the Disneyland Hotel was in August of 1956 where a star-studded gala was held with over 400 invited special guests. The photo above was actually taken in August of 1957 where Mr. & Mrs. Arnone were brought back to help celebrate the first anniversary but they were indeed the first registered guest on October 5th, 1955....mystery solved!
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