Is this an outside venue, inside venue, or a mixture of both? I am going to a show and it is getting a little chilly at night, I want to make sure that I have to proper clothing.

As others have stated it is both. It's actually 3 venues in one depending on the size seating needed. Intimate seating is available with 2500, indoor seating 4000 and indoor/outdoor seating 8000.

The venue has large aircraft doors and can open and close them. Check the event to see if there are lawn tickets, if so the giant doors are likely open.

Its both

It is both. But you know when you buy your tickets if you will be outside. Not all show sell lawn tickets.