First festival gig this weekend....how do we capitalize?

Hi all! Huge fan of the subreddit and all the work everyone's putting in. Obligatory "I'm so proud of this community."

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After three years of 1am bar gigs, empty venues and a hell of a grind every week, this Saturday my band is playing our first festival gig. We are headlining a side stage at primetime on Saturday night with a one hour set.

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To say we're stoked is an understatement. But, I really want to make sure we can capitalize on this. For anyone with fest-experience, what did you do/didn't do/wish you had done/wish you hadn't done before, during and after your first festival gig? Ideally, I want to capitalize on it and break into the festival scene more. How do we keep rolling?

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Where should we invest? Should we hire a photographer/videographer? Work on some cool new stage moves?

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Any advice, personal tales, etc. are greatly appreciated!