Yes you certainly will need to. The Little Golden Booklet is available to download a week prior. It contains everything you need to know, including What To Bring, Playing Times, Maps and Directions, Campground Directories, Camping Tips, etcetera etcetera etcetera.
For more topics, have a look at the list of clickable topic links. Years of know-how and accumulated wisdom is all collected there. Golden Plains is a weekend in the country, and although it’s a temporary town for the weekend, you’ll need to devote a little time to getting stuff sorted in advance. A stitch in time saves nine.