Does anyone know the time frame the ADT uses? Is it the last 6 months, forever, last X number of trips, resets each year? Does frequency matter? Lets say my ADT is 1000 per trip (A made up number). In regard to comp offers does it make a difference if I do that once a week, once a month, a year?

I play at Cherokee about every other month. Most of the time I have been able to get a free room or good discount at a hotel across the street. One time I was given a free room in the casino, but Im chalking that up to a computer glitch. Anyway I went to LV in June for a week and play a several different Harrahs casino almost every day, but not for every long for any given casino (I also played in non Harrahs casinos). When in Cherokee I will play for about 10 hours a day. Im assuming my ADT took a big hit from the LV trip.
Any idea on how long till my LV trip is cleared from any ADT calculations?

It isn't public knowledge anymore, but in the past Harrah's let you see some of this data online. And at that time they seemed to focus on 3 ADT numbers based on: your last 6 visits, the last year, and the last 2 years. They easily may have changed this method by now, but it's probably a good starting point.

More details can be found here:

http://www.west-point.org/users/usma.../V/FAQ_HET.htm

I have also heard that CET has a complex formula that comes up with a final number to determine how much you are "worth" to them. In this formula, I would assume ADT is the biggest factor, but if two players have an ADT of $1000 and one of them shows up 3x more often to play, he or she would be more valuable, obv.