I got the 20/35K promo. I was pre-registered and I stumbled across it on my account activity page.
Last year, I had kinda slipped but they kept me at plat anyhow. The Spring megabonus just offered 15/25K, but when I called they told me that, as a plat, they'd keep track and if I hit the 20 nights they'd add in the additional 10K.
I did and they did. Big smiles all around.
In my current location, the only local Marriott is a Fairfield Inn and I get their big suite about half the time, so this one is going to be a pleasure.