Well, I did a little more investigating at Atlantis to see if I could figure out how "Tier Points" were accumulated...
It SEEMED like Tier Points were assosciated with "Base Points"...
I seemed to earn a Tier Point for every $50 coin-in. Then I went and swiped my card to earn 2x points, and then checked it again, and I seemed to earn a Tier Point for every $25 coin-in...
So extrapolating this onto a 4x points day, would mean that for every $12.50 coin-in would equal 1 tier point.
This is just loosely based on my $100 coin-in checks...but it would seem that if you ONLY played on 4x point multiplier days, then to earn Platinum Status (15k Tier Points per year). It would take $187,500 coin-in per year.
Of course, it may vary on whatever game you choose to play, as the particular game I chose returned .035%.
Being that doing this, would have an expected loss of $1875 per year ($156.25 per month), I don't think the bennies would be worth it, personally...