More details on the SPG Nice Choice Summer Promotion are starting to appear. This is from the FlyerTalk board, where LovetoTravel83 has received these (as yet unconfirmed) details from his Ambassador:
Choose your own earning period (You can only choose one)
Choose whatever you want to earn during (You can only choose one)
Awards (Free Nights & Redemption discounts)
*There is no switching of registration codes or earning periods after registration. No exceptions.
* Registration from May 1- June 30, 2012
Here is a summary of the offers:
Double Points beginning with 2nd stay. No limits.
Every 6 nights, get 3k Starpoints (max of 9k)
Earn 500 bonus Starpoints per night at Sheratons worldwide (no limits). Online-bookings ONLY
Stay 15 nights, get Triple Starpoints on all stays retroactively. No limits.
10 nights, get 1 Free Weekend Night (cat 1-5). Max of 2 Awards. Weekends are Thurs, Fri, Sat, and Sun.
Stay 20 nights, get 1 25% percent off redemption Award (cat 1-5). Max of 2 Awards
Stay 4 nights; get US$50 SPG Award Cert (max of 3)
Stay 4 nights; get $50 or EUR50 Westin @ home discount code (max of 3)
Stay 4 nights, get $50 or EUR50 Sheraton @ home discount code (max of 3)
Stay 5 nights, earn 1 bonus night toward elite status (max of 3 elite qualifying nights).
Stay 10 nights, earn 3 bonus nights toward elite status (max of 6 nights).
The original post is here and general response from SPG members has been underwhelming, with many people not very excited about the promotion.