Originally Answered: Young girl going to a concert alone? Good idea?
You'll probably be okay if you just take some elementary precautions - like you would when entering any potentially risky situation.
Most of what I'd advise is just Common Sense. Don't dress or act like you're either easy or rich (jeans and T-shirt with sneakers: no jewelry, no short skirts, no shoes that will twist your ankle if you have to run). Be aware of your surroundings, including the people in your surroundings. Go early (better get going!) - if it's still light out when you arrive, you've cut your Outside Risk in half.
From what I recall about rasty neighborhoods in Clevo (and this has remained true for most other cities), you're a lot likelier to become a victim if you look weak or scared than if you look like you can handle yourself. Parking is always an issue inside the city; you may be better off paying for a parking place (as long as you don't have to walk too far).
Inside the venue itself, you're probably going to be okay. The owners really don't need the kind of negative publicity that comes from some young person meeting a sticky end in their Ballroom, so they keep the security as tight as they can (within the context of a show). Still, it5 never hurts to take simple precautions. Guard your purse, jacket and phone, and don't set any of them down (even for a second). Also, avoid talking to anybody you don't know; that friendly girl who starts up a conversation with you might very well be working with her thug boyfriend to set you up for a life of miserey and pain.
Once you've figured out your basic security, stop worrying about security and just enjoy the show! It helps in your case that FATT is a more eclectic band (than, say, Avenged Sevenfold); their show IS the party, not an excuse for the audience members to party like a nincompoop and puke all over their neighbors. Still, I would advise you not to eat, drink or smoke anything that is offered to you (because you never know until you do, and by that time it's usually too late).
Be very careful when leaving the venue: whatever anybody's ever taught you about avoiding rapists and muggers, do that. Carry your keys in your hand when you leave the building (rather than digging in your purse for them in the dark), and watch the shadows for lurkers. Keep your eyes moving; your hearing will be compromised by the volume of the show, so you'll have to rely on your vision to compensate. DO NOT hang around in the parking lot afterward; to a criminal, that just screams "ripe pickings".
Don't pass up a chance to see a band you like because the neighborhood looks sketchy: nobody ever had their life changed for the better by a show they didn't see. Just be alert, take care of yourself, and have the (so far) best night of your life !