I wonder if an August 31st-September 1st night would count for both accelerates... Mine sucks big time and is really boring:
Earn 35,000 total bonus points.
2,000 September Bonus Offer
Stay once in September and get 2,000 bonus points. Terms
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1,000 Stay Once, Get 1,000 bonus points
Thank you for being a loyal IHG® Rewards Club member. Stay once and earn 1,000 bonus points. Terms
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5,000 Stay 3 Nights
Get an additional 5,000 bonus points after night 3. Terms
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3,000 Stay 3 more nights
Get an additional 3,000 bonus points after night 6. Terms
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3,000 Stay 3 more nights
Get an additional 3,000 bonus points after night 9. Terms
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3,000 Stay 3 more nights
Get an additional 3,000 bonus points after night 12. Terms
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3,000 Stay 3 more nights
Get an additional 3,000 bonus points after night 15. Terms
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15,000 Stay 3 more nights
Get an additional 15,000 bonus points after night 18
No way I'm staying 18 nights just for 35k points.
I have a stay in September already (actually two nights, but w/e), so I'll take the 3k from the first two offer and call it a day. Maybe ONE extra night for the extra 5k if I see a very appealing deal somewhere.