And this is one of the challenges of speculation: “fandom” overlaid with friend groups. Friend groups form based on shared interests and commonalities, which are often their fandoms. So, from an anecdotal perspective, “all your friends” will like something or do something in a manner very similar to you (like, planning a trip to a theme park). This is where the “But all my friends like [small market IP]” arguments come from. But friend groups are not everyone and fandoms are not the majority. Businesses (like Universal) will make decisions that hew towards broader behaviors.
I’ll put it this way, my wife and I have traveled a good bit over the last couple of years. She’s a planner, but doesn’t really do fandoms. Most of our trips were discussed about 4-5 months out. Most were booked 2-3 months out. None more than 100 days out. Since we’ll be back in the US next year, I mentioned a trip to HHN in Orlando and she literally grimaced like I was insane at the idea I was trying to plan something so far out.
What fans do isn’t the norm.