Originally Posted by
LovetoTravel83
Depends on the property. First time making platinum was over 10 years ago and happened to me mid-stay (previous stay posted a little late). Back then they didn't have the breakfast benefit but they had the internet benefit which was comped during checkout.
I too had the internet charge waived on a stay where the account status got upgraded after check-in. I wouldn’t count on a lounge access surcharge or breakfast charge being waived in the same way, but people may get lucky.