Longtime Las Vegas residents will remember the incredible buzz the Rio generated when it opened in 1990. Owned and operated by Marnell Corrao Associates, the Rio was Las Vegas’ first all-suite hotel and its Brazilian theme initially warmed locals before it expanded and branched out to serve other markets. Nearly two decades later, another Marnell – Anthony Marnell III, son of Rio developer Anthony Marnell II – is trying to generate the same buzz at the soon-to-open M Resort.