With the cities of Osaka and Wakayama stepping up their efforts to win a legalized integrated casino resort, the Japan IR Expo opened Wednesday in Osaka.

The two-day event was attended by six international casino operators, including MGM Resorts Japan LLC, Melco Resorts & Entertainment Ltd., Caesars Entertainment Japan LLC, Las Vegas Sands Corp. and Wynn Resorts Ltd.

Entertainment and construction companies, banks and dozens of firms from Japan and abroad hoping to become involved with an integrated casino resort were also present.