I agree it is not the majority of vacationers, but I think there are a significant number of WDW guests that decide less than 90 days out they are going to pay a visit. And the percent that frequents WDW on "spur" of the moment planning may actually have opted to book onsite rather than offsite or the Dolphin/Swan just for the FP+ advantage. It is a motivator, that fear you will not get to see experience your favorite attractions without 120 minute wait times.
I think 2 things jumped hotel occupancy.
I think there was a very small increase in guests choosing to stay onsite rather than offsite for FP+ opportunity.
I think Disney saw an increase in occupancy last quarter because of the freaking ice age winter we all just went through. By January everybody up north had had enough of artic temps and were making southbound plans if possible. Even those along the I-40 and I-20 corridor were ready for sun and warmth.
View attachment 52945
Florida was looking pretty good to everybody in blue and purple...