I too was led to believe that when I arrived in TJ, there would be this burning hell-hole with bodies hanging from lamp posts and men with burlap sacks waiting around every corner. My experience was quite the opposite. It was pretty freakin awesome. I thoroughly enjoyed my Tijuana adventure!
I went to the OCC this December all by myself. I even came a day early so I could get my shop on. I took a cab called by the Marriott to Revolucion Ave and arranged for the same cab to pick me up at a predetermined time and place. I wore any old work-a-day stuff I might wear to Wal Mart. Everywhere I went, I looked purposeful, focused, thereby not inviting anyone to think I was easy prey. I didn't make eye contact with street vendors or anyone with whom I didn't have business. I didn't enter sketchy places or streets and kept myself in full public view whenever possible. I didn't flash cash and I didn't drink. I also made it a point to be back at the hotel before dark. After banding, some new bandsters and I shared a mini-van cab to Rosarito beach and back, with the same kind of pre-arranged pick up. We got some great post surgery beach walking in, I highly recommend it! I haven't experienced hardly any of the discomfort I was expecting and I think it's because of the huge amount of foot time I put in.
If you keep your ducks in a row and make sensible choices, you'll be just fine. Oh, and tip your drivers and your bell boys, $2-5 is customary. 50 cents is insulting to all service people everywhere. Don't think it's cool just because everything is supposed to be cheaper in Mexico. (I'm a conversationalist and boy howdy you should hear some of these guys' "Amercian Tourista" stories.) This shouldn't have to be said, but during my extended stay I saw some behavior from touristas that made me embarrassed to be American. Treat everyone you meet like a real PERSON. And don't try to use their lingo *at all* unless you are extremely good at the local dialect. It comes across as mocking to them. If you speak in English in a way that acknowledges and respects that they had to learn it for YOUR convenience (looking a little apologetic and helpless doesn't hurt,) they will appreciate your awareness of that fact and treat you like real people. And we all like to be treated like real people, don't we?
You should have a fabulous time!
Oh... but maybe invest in some of those packets of toilet seat covers. Not to be icky, just functional, but... While I thought I was choosing good places to use facilities, I am now sporting an... irritation... on my hindquarters. Just sayin'.