So I asked for the general manager to enquire about the lounge access and failing to be offered a platinum arrival gift. She told me the rate did not include either. I asked if my status applies at all to the stay and she said no.
Turns out I missed this in the rate details. Didn't know it was even possible to ignore Marriott Rewards at a Marriott branded property, I've even received status benefits on rooms booked through the hotwire/Priceline type sites.
Guess its like basic economy rates, look pretty much the same when you book but a surprise when you check in. Not a shady corporate code either, fortune global 50 or 100 company.