I was in Macau some years ago, but in that time Macau was still a portuguese territory ( Macau changed to be a Chinese territory on 1999) there were a lot of casinos, all from STDM. I could visit Casino Lisboa, Mandarim Oriental, Hyatt, Kam Pek, Floating Casino, Jai Alai, etc All of them openned 24 hours a day
I could obtain the other chips and jetons from several other sources - friend trips, etc
I wrote an article on CCGTCC magazine - Macau brief summary of gambling on Fall issue 1995 ( October, November, December)