Time running out for SPG Amex highest sign up bonus ever

As you are probably aware by now, American Express is offering their highest sign up bonus ever for their Starwood Preferred Guest credit cards (personal and business versions) with a chance to get 35,000 bonus Starpoints after you use your new card to make $3,000 in purchases within the first 3 months. However, time is running out to take advantage of this offer and it ends next Wednesday 3/30/16 which is less than a week away!