Just in case you haven't had time to read through the thread... post #1 is accurate as of date. Yes, there were issues with
MNSSHP FP+ and concerns with entering @ 4, and park closing @ 6pm which we now know is only for MVMCP, not MNSSHP. There are emails from Disney stating you can enter @ 4 (see previous posts @ post with attachment if you would like to see these emails) for MNSSHP. However, we may not actually know until the 1st MNSSHP. And be mindful MVMCP could be different from MNSSHP as seen with this year's info. So might not know until 1st MVMCP. Also, remember the 4pm early entrance was never advertised by Disney just on Dis and other websites/blogs that knew of this practice/perk. Please note all details of concern mentioned have been about MNSSHP with PP speculating about MVMCP.
Post #1 & 2 will always have the most up to date info; based on Disney news releases, in the know websites (KtP, allears, TP, Chip & Co., etc.) and actual reports from people.
Hope this helps!