The activity is under the canopy of the forest so you need to dress according to the weather. Tickets can be purchased online.
This is a ropes course set high above the forest floor. It is safe because there are ropes and harnesses that keep you from falling. However, this course requires some upper body strength. It would not be recommended if you are scared of heights.
I don’t know if this is offered in the winter. However, I would recommend doing this in the spring, summer or fall.
Last year, there were discounts offered if you purchased before July 1, 2017. I would also look at Groupon to see if it offers other discounts.