A couple friends and I are planning on heading down to Universal on the weekend of the 19th for HHN. We would be buying the Universal 2 park tickets for 2-3 days. If you buy the 2 park 3 day ticket, does this include the HHN as well, or does that require a separate purchase. Because I see they have separate tickets for HHN but Im not sure how it works. Our plan was to go to the parks and hit the rides during the day and then HHN at night. Also are the rides open during HHN time at night, or is it just all the halloween stuff open.