Uni learned a lesson and even if it won't have the same effect, they still don't want to take a chance. BTW, they learned two lessons, the first one was don't announce too early and the second one was built stuff beforehand.
BTW, my nurse buys one park a year. Last year it was Sea World and Aquatica. This year it was supposed to be Uni, but from knowing me, she knows what is coming next year. She is considering not going with Uni and maybe going with Disney and then Uni the year after. Since her husband is on a waiting list to get employed full time with Disney, she is playing the wait and see game. Her Sea World doesn't expire until June anyways. But this kind of tells you, there still could be a drop off in sales for people like her.