Although it says local rate, I used my traditional 3 letter corporate code on Marriott.com and the first word in the blurred images is the company name. Large Asian company with US subsidiaries.
I brought up the platinum arrival gift and lounge access with the manager on duty and she stated I was not entitled to either. Overall the hotel didn't impress me so I just checked out early and moved to the courtyard which is much better in my opinion.
Debating if this is worth some kind of follow up with Mariott corporate. Not sure how to do that either, any advice on if it's worthwhile?
At the least an important lesson in always reading the rate details on Marriott.com when booking.