Personally I think the event in Jeju was significantly overhyped and basically made the numbers only since it's the first event for Stars after a long break. As well as them "sponsoring" players from various private poker clubs/communities in China mainly.
One can never evade dem grandpas when offering 25/50 obviously but it will also attract a ton of recreational players/tourists that can not afford higher limits/time to wait for tables.
The problem with profitability of some poker rooms and the amount of money they can offer for "rent" usually lies in being massively overstaffed and paying a significantly higher salary to people (than they deserve) who basically doing nothing 90% of their work time. Poker King quite quickly realized that and removed 3 women sitting at their "private" cashier all day along with their new ****ty chip design that god knows who ordered and reverted back to using original Venetian chips.
A lot can be achieved if you have people passionate about their **** and have actual understanding of how players think, what they want and being able to balance it with company goals and objectives. As for me having traveled a large portion of my life around Asia, having resided in HK, I just don't feel like grinding the circuit anymore. Even though I know a few gold mine places for poker still
Hence, I really just care how things are going in Macau these days.
As from casino standpoint they sometimes fail to realize that poker players presence for extended periods of time can make up for a good profit increase by default as at least half of them gamble quite heavily having the money concept removed from our genes from birth
This can also be linked to same VIP card benefit scheme as they did in Galaxy for example and it was AMAZING for the game. A lot of stuff can be done, but unfortunately not getting paid to disclose all i have in my mind.
In the end of the day it all comes to correct marketing initially, hardcore experienced management in between and a creative approach to keep the players happy.