i saw this thread on wizardofvegas, just want to add my own 2 cents.
i am a hk guy who go to macau from time to time, and i have interest not just in gambling but also on human aspect of gaming industry and development, and comps is one of those areas.
i don't have a structured analysis to say at this moment, just want to throw out some random thoughts based on my own explorations and learning from others on hk gambling forums:
- as people probably know, macau gaming audience is divided into mass market and junkets. junkets is basically casino outsourcing all the messy aspects of finding mainland chinese customers, taking care of them and managing their credits/debts. For not dealing with these headaches the 6 gaming license operators (and their subsidiaries) provide space and give a heavy cut to the junket clubs. the key things are "dead chips" and rebates and undoubtedly there are many colorful stories in that area, but most people (including me) can seldem look behind the curtain except from their related news appearing on newspapers from time to time.
- re mass market gaming the system is clearer. sands/galaxy/city of dreams/mgm provide descriptions and websites on their comps/membership systems (google and read through them)
sjm does not because its management is backward (stanley ho is 95 and living in a hk private hospital) and their business rely mostly on locals and a lesser-educated mainland chinese clientele
wynn does not because it thinks it is above the other operators, and because it is the best it does not need to offer an attractive comp system (btw i do like wynn and its properties

i am just stating the fact that their attitude is obviously different from the others)
- sands comps system provides the most info and is most extensive simply because it has the largest presence, and also the most number of people passing through its massive casinos.
sands is also the easiest to get comped rooms simply because it has significantly more rooms than others (venetian 3000, cotai central 6000!, parisian 3000) and also sands macau.
- for example to get a comped room in cotai central holiday inn hotel you need 25 points, and 1 point is earned from betting different amount on different games:
slots 460 (because slots has the highest hold and theo, and also because slots are not that popular among chinese gamblers)
sic bo/roulette around 1200
baccarat/blackjack around 3000
- but don't be fooled by the seemingly low 25 points for a comped sands room, it is that low only because sands has more rooms than it knows what to do with. for the other comped items such as food voucher, ferry tickets, non negotiable chips and so on, they still require several dozen points just to start getting them, and need more if any meaningful comps are considered.
- ofcourse comps system changes and it is basically correlated to the chinese economy, at the height of the chinese economic bubble in 2014 casinos had no incentives to attract people because they were making money hand over fist, but now the chinese economy is in much worse shape (reality is way worse than what the chinese communist party propaganda tells the world) casinos are more attuned to the regular joe gamblers.
- there is also the question of new developments, in 2016 we had parisian and wynn cotai, mgm cotai is slated to open this october, sjm cotai next year, cod will open a wacky new tower next year, there are also other future stuff such as louis 13 hotel, galaxy phase 3 and 4, studio city phase 2 etc but those are at least several years ahead.
- all the current casino licenses will expire in 2020 and 2022, and nothing yet has been said by the chinese government even though all the operators are rather anxious on the uncertainy.
there are whispers of power struggles involving factors such as chinese government vs american powers, stemming outflow of capital from mainland china, political management of macau and its people (as an example to the disobedient democracy-wanting hk population), cia spies based in sands/mgm/wynn properties, and other some such tom clancy novel materials...
sorry if my ramblings are all over the place, i am just a guy interested in these stuff and anyone is welcome to communicate in this thread or contact me to talk more.
happy gambling in macau!