So I will be staying in one Marriott property from March 2nd to April 1st which will get me from Gold to Platinum. I will be moving to a Sheraton on April 1st and stay there for 45 nights.

My booking for the Sheraton is currently for bed+breakfast as I wouldn’t get free Breakfast as Gold. However, I expect that my status would be updated to Platinum 2-3 days into my stay at the Sheraton.

Can I claim breakfast and lounge access as soon as I reach it and just show them my membership card on the app? Since my status was achieved by having stayed at a previous property and not during the stay at the Sheraton.