Other than using the phrase "the mad king," Swift's OP doesn't have too much in common with the inspiration. As comedian Mitch Hedburg said about inspiration:
So I think you'd be able to keep up with the RP's lore, since I don't believe Swift intends on making it more accessible than the series it's based on is.
Also, I'd like to reserve a spot for one of the tree hugging hippies if you don't mind. :D