I saw checking out the website today and noticed some ways to find out the general schedule of days their open. I was browsing tour reservations dates. Based on those the park opens March 27th and I'd think pass holder preview day is the saturday before.
It also looks like they will be open daily starting opening day for two weeks and then go back to weekends until May 22 then they go daily for the summer. Then August 31 they go back to weekends and September 7 is the last day of the summer season and then September 12 and 13 look like pass holder appreciation weekend and Howl-o-Scream starts the 18th of September.
Also the 2015 single day tickets say they expire October 31 and the park opens March 27 and the fun card says its good until September 7.
Not sure how true all this is but everything seems to follow the same unofficial rules like other years before.
It also looks like they will be open daily starting opening day for two weeks and then go back to weekends until May 22 then they go daily for the summer. Then August 31 they go back to weekends and September 7 is the last day of the summer season and then September 12 and 13 look like pass holder appreciation weekend and Howl-o-Scream starts the 18th of September.
Also the 2015 single day tickets say they expire October 31 and the park opens March 27 and the fun card says its good until September 7.
Not sure how true all this is but everything seems to follow the same unofficial rules like other years before.