Our trip is in 3 weeks and I made FP+ selections for 10 people this AM with no issues. The only attraction at any park that showed "standby" was Ariel's Grotto at MK. I think the idea of needing to make FP+ selections at midnight 60 days out is unnecessary (unlike ADRs).
Also, due to an issue I had on the
MDE site where I couldn't add one family member online, I spoke to a rep and she confirmed that I would be able to get regular FPs in the park, in addition to my FP+ selections. This was in response to me (and her) talking about how crazy it is that Maelstrom is in the same tier as Test Track and Soarin' at Epcot, which means you can only select 1 of the 3 with a FP+ (similar to Toy Story and Rock 'n' Roller Coaster at HS). Her suggestion was to just get a regular FP for the others.