This should be interesting

....how would they manage to do this Babs if in fact all the games are truly random ?
You make it sound as though they can tweak something or adjust the games to hit better to give longer play time as you say...
Payout percentages can be adjusted, and the games "tweaked" by altering the symbols on the reels, or the paytables when the symbols you see are only a graphical representation of the win (i.e. weighted reels). This does NOT mean that results become non-random, or as random as random number generators with a "seed" (the number that starts the series of mathemetal equations that generate a pseudorandom number). That "seed" is usually linked to a clock, so the microsecond you hit spin, the internet traffic before it reaches the server, etc, are random enough to suit me. The B&M stand alones all work that way.
A number of years ago when Rideau Carleton Racetrack and Slots introduced certain new slots, they were guaranteed to be "full pay" for the first six months, and following this period, the techs came in and put the bank "out of service" and set them to more normal levels.
The rules that govern the slot machines at the Society des Lotteries in Quebec run casinos allow a casino to change the payout on any given machine only once per day. A certain overall payback percentage needs to be maintained, but individual machines can be "tweaked". During Casino de Hull's (now Casino du LacLeamy's) fifth anniverary, 30 percent of the slots were set to full pay for five days.
But I rather doubt that any casino is going to up the payout percentages rather than give a free chip with a hard to meet WR. Players would not necessarily see a big difference, but we all know if we get $10, $20 or $100, even with a WR attached.
They might just cut back on Christmas (oops, I meant Seasonal or Holiday) gifts entirely. I know a few peeps that have not got their traditional Xmas bonuses from their employers...and I know of at least one "Customer Appreciation Party" that did not show much appreciation at a local watering hole. People feel disgruntled if they did not get the same appreciation as in the past.
Sorry for the derail from the original thread.