You might want to try Burning Man. The theme's a little bit Pagan, but it's edgier, and it's not a Pagan event. Costuming and body painting and fire and art and clothing optional. You can rough it in a tent like I always have, or pull in there with an RV, satellite phone and DirecTV. It's an incredible event, spiritually moving, but perfectly compatible with Atheism as it is for Pagans or just the undeclared decadent.
I think one of the things that "really bugged me" when I was still a part of pagan scene, was while knowing my plant biology(botany-if you will) certain practitioners would go on this kick, (mistakenly thinking I fully supported their notions,) of attaching specific fairies and magickal(how I loathe the term now) properties to each and every plant. I personally didn't need fairies to augment my appreciation for nature, or my understanding of how nature operated. While I'm well aware of medicinal properties that nature provides, I really didn't want to go the route of pseudo-scientific(holistic) practitioner of questionable means. The holistic medicine practitioners I met, were less than qualified to diagnose and treat specific serious illnesses, and many of them were fairy magick practitioners. I don't intend to poke fun at them, but seriously? Unless it is based on sound scientific evidence or medical findings, I would caution anyone before consulting any of them. I would question first their credentials, and make sure they actually have real med/nursing school-type training.
Just for clarification: This is also not to say that there aren't qualified and reputable and credible alternative medicine practices, nor am I suggesting that there aren't those that meet certain criteria and professional standards. I just think it's "approach with caution" when it comes down to it. Fairy magick(blegh!) doesn't qualify one to medically treat illnesses.