PG, the Corporate Preferred level is not really a published level in the program so we don't put any information about it on the web site.
Your threshold bonus will re-set each calendar year (January - December). You would have to have five stays in a calendar year to reach the first threshold bonus and another five stays in the same calendar year to reach the second one. There are no threshold bonuses beyond this because your account will upgrade to the Gold elite level after the tenth stay is credited. Then you begin to earn bonus Starpoints on every stay.
Sincerely,
William R. Sanders
Customer Service Coordinator
Starwood Preferred Services
[email protected]