Since this is a California on-site thing, California sweepstakes law applies.[1] - "The exact nature and approximate value of the prizes must be disclosed clearly and conspicuously when they are offered." - "The law prohibits the company from misrepresenting the odds of receiving any item offered." - Prohibited: "Failing to award and distribute all prizes of the value and type represented." Online complaint form here…
I'm frankly surprised these aren't being blown out of the water by litigation. One might even be able to make the argument that the mall operator, timeshare commission payers, et cetera are complicit.
Also keep in mind these scams tend to occur in well-populated areas.