What specific data do you plan to use to resolve this market? The above cited webpages talk about crowd level, but I didn't see average attendance numbers. And the only Disney parks that report attendance regularly are the parks in Japan which are not owned by Disney.

The TEA Theme Index is a reputable source for attendance, but it just has annual numbers, and does not break down the numbers quarterly. I would love to make a prediction if I better understood the resolution methods.