I got an e-mail with a "renewal and stay" offer by e-mail (must sign in to account to renew):

Renew Ambassador membership by January 1, 2021, and stay two nights (IC, Regent, or Kimpton) by April 30, 2022.
Get bonus points (differing amount depending on which renewal option is chosen).

1. Renew for $200, get 35,000 bonus points with the stay
2. Renew for 40,000 points, get 20,000 points with the stay

I'll renew for $200 because the 40k option only gets one-half point per cent of value. Also, as I recall, using the Chase IHG Premier card (or Select or Traveler) only earns one point per dollar in the "other" category. If so, better to use a 1.5 or 2 cents per dollar cash back card to renew Ambassador. I am positive that point purchases also earn as "other" on Chase cards.