Originally Posted by
blakepilot
Would I be able to use a diamond upgrade to go from a paid Park Suite King to either Presidential suite or another bigger suite at PH Tokyo with any degree of certainty?
There's a small chance you might get bumped one level just for being a diamond, but it's nothing you can count on. The Park Suites are about 85-90 sqmt. Most of them are not kings, but have two queen beds. If you have confirmed a king suite, since there are so few, that slightly increases the probability that they may upgrade you.