What "bags" to check for flying into Roo? (No car rental)

My friend and I are flying in on Wednesday,, taking the perkins shuttle to the festival and staying in the tent only campsite.

We will be stopping to pick up some supplies on the way from the airport, but I'm wondering if anyone who's done this has input on what to prioritize bringing on the plane/buying after we land?

For example, I have a wagon I could bring as a slightly oversized checked bag (not sure how far we'll be dropped off from tent only camping, but hopefully with a wagon we can carry all our stuff in one go). Should I bring the wagon on the plane?

I could also bring a canopy or cooler on the plane as another checked bag, or we could buy them after we land.

We should be able to fit our tent in our carry on bag.

In the interest of saving money/avoiding waste, what 2-3 things would be most worth bringing on the flight?

Any advice is greatly appreciated!