No casino in the states of NV, CA or LA has ever informed me nor have I seen other patrons be duly made aware of the 2%-15% for the slots nor the 1% for Blackjack, Video poker or Craps.
In Nevada, I don't see any stipulation they're even required to, by the Nevada Gaming Commission. [1]
[1] LICENSING AND CONTROL OF GAMING - GENERAL PROVISIONS
Neither I nor anyone has said that they are required to make you aware, let alone "duly" so.
For instance, it makes good business sense for a casino to advertise their 94.64% slot return since they still have an edge. You don't have to be an industry insider or close to it to learn this information, as you implied.
No casino in the states of NV, CA or LA has ever informed me nor have I seen other patrons be duly made aware of the 2%-15% for the slots nor the 1% for Blackjack, Video poker or Craps.
In Nevada, I don't see any stipulation they're even required to, by the Nevada Gaming Commission. [1]
[1] LICENSING AND CONTROL OF GAMING - GENERAL PROVISIONS
https://leg.state.nv.us/NRS/NRS-463.html