As I read about the Revel promotion and controversy, it comes to my mind that if someone really wants to do a promotion like this and risk tens of thousands of dollars, first they should go to the slot club with a tape recorder in their pocket (or your google glasses or soon to be on the market I-watch or equivalent), and say "Mr. So and so, how does this promotion work?". And "can I play the $25 Double diamond slot machine (or whatever...)?". And "are any machines excluded?". And go to the high roller area and ask the slot attendant, "can I play this such and such machine for the such and such promotion?". Sit down and play (and maybe mention it into your recorder and definitely write the info such as machine number etc in your gaming diary). If you are denied Your loss, you have perfect evidence for a civil lawsuit.....
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On another note, I'd always be skeptical of doing some sort of promo like this where the loss is repaid in free play, whether one time or over 20 installments, or whatever. Theoretically, it all sounds well and good, but I've often had the sad reality of getting free play, and when I play it through just once, lose part of it. All too often 10-50%, even on a 99.96% positive VP machine. The thing is, as we probably all know, in the short run you aren't too likely to hit a royal or even a quad, and it is those hands that really pull up the average payouts. Yep, you could win as you go for the "loss" promo. But if you end up losing, getting that loss back could be tricky, depending how deep in debt you go. I know, it's a gamble, but for those who really would try to maximize something like this, saying risking a loss of $10k plus or $100k when they didn't win, it could be a costly gamble, even if the Revel pays off its end of the promo. Which of course is why the Revel is willing to offer such a thing. In the long run of the promo, the Revel is probably still going to win money from the aggregate of all its promo-gamblers, and maybe get some of the new customers they want as well.