As to Lifetime Nights, am I correct in assuming that when the merger occurs, your LT SPG nights will be added to your LT MR nights in order to determine the status you can achieve prior to 12.31.18?
I am approaching 750 LT MR nights and needing to maximize them to achieve the grandfathered LT Platinum Premier level. My SPG account shows 12 LT nights with the explanation "Lifetime totals include historical Starpoint eligible nights from 1999 forward and Award nights from October 1, 2011 forward. Gifted or promotional night credits not included."
If those 12 nights count toward trying to achieve 750 prior to 12.31.18, it is much more achievable.