I recently played a couple days to renew diamond under the new tier bonus system. Some notes for those of you concerned about minimizing trips/maximizing ADT....
The tier bonus won't show up on your card (neither on the machine display or at the booth) until the next day. It took 2 days before it showed up online. So while you can earn full diamond in just two days of 2500 base points under the new system, you'll have to come back a 3rd day to pick up your new credentials when then get credited a day after your qualifying play.