NagaWorld is celebrating the once-in-a-thousand-year date of 9/9/09, with a series of concerts and cultural dances.
In a press release which promotes NagaWorld as "the ideal location for families", the hotel and casino says Wednesday's events will "create unforgettable experiences that people of all ages could enjoy".
However, a spokesperson for NagaWorld said it had no daycare centre, special facilities or playgrounds for children.
The celebrations will feature performances Wednesday and Thursday from top artists such as Sokun Nisa, Nobaya Rith, Sokun Kagna and Chorn Sovanna Reach, alongside international events from around 5pm until midnight.
From Wednesday to Sunday, dancers will feature Angkorian style performances of the traditional Apsara dance, the Royal Peacock Dance and the fast-paced Milk Churning Dance.
There are also food and beverage specials and promotions on spa treatments.
"Cambodia has never seen so much entertainment under one roof," said Steve Cheng, NagaWorld's chief operating officer, in a statement.
The statement also said patrons had the chance to "win up to $20,000 in the 9-9-09 Lucky Draw".
However, it was not clear how patrons could do this, given the total prize money in the first, second and third prize categories added up to $17,558, with $1,588 in cash and the rest in "play value".
The 9-9-09 celebration is organised by NagaWorld, the Ministry of Tourism and Raksmey Hang Meas Production.