The hours are 7 to 11 Friday, 6 to 11 Saturday and 7 to 10 Sunday. Tickets can be bought online for a time slot to help avoid a wait and also on site. You can buy a ticket for just the "hotel of Horror" attraction for $30 or a combo pass to include altered nightmares for $40. I highly recommend going through both sides. (I'm a current actor here)
Yes, they're open this weekend, and every weekend through October. I believe 7-11 on Friday and Saturday and 7-10 Sunday. Tickets are $40 for the combo pass and you can either buy them on their website or purchase them when you get there.
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