Not correct.
From the FP+ sticky:
https://www.disboards.com/threads/f...al-tier-1-booking-anytime-fps-cl-fps.3538258/
When_
2 or less FP+ are booked for Park #1:
Additionally, the new changes allow you to book fewer than three FP+ and once you scan the first FP+ (from within the first park), you can at that point make FP+ selections for a different park, even if you still have a FP+ remaining in the first park.
This can be especially helpful for Tiered parks – if for example you wish to hit Epcot at rope drop, use only a Tier 1 FP+ and then still have 2 more FP+ for another park later in the day.
Additionally, there is no restriction on Tier requirements BETWEEN PARKS during one day. So if you use a Tier 1 at Epcot you can then book a second Tier 1 at HS immediately upon scanning – Also, you can even book your remaining two FP+ at two different parks if you would like!
NOTE: Splitting FP+ between parks or booking for another park can NOT be done until the same day, AFTER you have already scanned your card/MB at the first FP+ Mickey head to “prove” to the system that you’re in a park.
You cannot book for 2 different parks in advance or even on the same day until you have scanned your first FP+ (not just gotten into the park).
