The advanced editor lets you simplify certain things and keep your story pages more organized, but if you're writing a simpler story to begin with and not planning to use scripting than it's not really necessary.
Anyhow, welcome to the site and good luck with your writing. Looks like you've been rating some of the top rated stories so you'll already have an idea of some of the possibilities and the quality level readers are looking for. Feel free to drop by the Writer Workshop if you need any feedback or advice.