I'm in a similar situation: already 100+ nights and no one can tell me my spend to date or even how spend will be counted so that I can estimate it myself.

I've been trying to get some answers, including about when I'll be assigned an Ambassador, and if anyone knows anything, they aren't revealing it. After spending hours on the phone and waiting a long time, I finally got an extremely noncommittal email from a MR elite supervisor saying that things will be announced later.

I also got stiffed on the Ambassador experiment and I responded by voting with my feet and shifting 100+ nights to Hyatt, where I've been treated very well and have had a Private Line Agent > My Hyatt Concierge for almost a decade.