Originally Posted by
laxmillenial
Platinum Premier is 75 nights.
Platinum is 50 nights.
The merge takes place in August. So you'll have 51 nights in 2018. That makes you Platinum Marriott. If you were Marriott Platinum prior to August, then you'd be bumped to Platinum Premier.
Looks like I accidentally swapped Elite versus Premier (still getting used to the new terms).
With 52 nights and coming from Marriott Gold, I'll be the new Platinum Elite (both from the nights and from the old Marriott status) which I'll keep through 2019 no matter what happens with the UA matching. If I make to to 75 nights (or there is improved tiered matching from UA - which seems unlikely), I'd make it to Platinum Premier for 2019.