Your hairdresser will give you a glam plan, but at a minimum, you'll want to make sure you've got some hairspray, pins and a comb on hand for touch-ups throughout the day.
Unless you're a pro yourself, doing your own wedding hair is a pretty big ask. We'd say it's a good idea to put the whole thing in some experienced hands.
This is all in the prep. Your hairdresser will likely want to get you in for a consult and a dry run before the big day, so make sure you bring heaps of photos and come ready to communicate. It's also best to get your hair cut about a month before and your colour topped up the week prior - that could just be a toner or gloss. Wash your hair the night before so your stylist has clean, dry hair to work with.