Read some of threads on here on this but wanted some confirmation. Card anniversary is mid March. So, if I understand correctly if I spend 75k before March statement end I would be platinum until Dec 2018, correct?

Wondering if makes any sense to do, I stay at Ritz Carltons and SPG properties about 8-10 times per year. With all the Ritz points I have plan to use for some of those stays, I assume upgrades not applied when using points at Ritz properties?