If you come to Alliance larp, you don't necessarily ever need to swing pipe. You can roleplay in the tavern etc., as a page (non-combative player). You can spend exp/bp on crafting skills and be like, a straight up merchant. I'm just saying if you have a passion for top notch rp and cool social interaction, you can still attend an Alliance game and never lay a finger on a boffer weapon.
The cops generally aren't an issue at site...well...last Caldaria event was a special circumstance. We shall never speak of it again. Episode of Surviorman gone wrong, that's all I'll say on that.
As for your costuming for a Tiefling, you probably want to avoid lingerie devil mistress costumes. Simply for the fact that is what those are. You can make some neat horns out of clay and spirit gum/liquid latex them to your head. Maybe use scarecrow teeth or custom caps for an evil intimidating looking grill. Platinum caps are optional and dependant upon how 'gangsta' a demon you wish to portray. You could use facial putty to rep any sort of petrusions, gashes, or otherwise nasty details on your face. Then coat it all up with some slick mehron makeup, I've had a lot of luck with that brand.
Maybe some neat demonic gloves? Or some black ones with your own creative paint design, with banjo picks or pointy finger ring thingies.
As far as clothing goes...do you or anyone you know have some sewing skill? I guess the style is up to you, I don't know what those types of clothes these guys keep in their closets.
A tail hmm, well, you could always go to the local fair, win a big *** stuffed cat for your girl (or guy) and rip its' *** asunder for your costumial gain. Yeah I said costumial, I made it up, what?! You could, at the same fair, go to the stabby toy vendor, and probably find a leather wip...put a dull arrow head on the end...that would look pretty effing badass...
So I hope that was helpful, both on and off topic. I hope you reconsider trying out our game one day. It truly is a lot of fun, boffers or not. It's good excercise to boot. So if you ever find tossing cards at each other is beginning to get stale, or if you ever just need to lose yourself for a weekend...try us on for size.
We fit everybody. We are made of stretchy rubber and other form fitting goodness. Mmmmm.
-jc