1. ALWAYS wear black there is nothing worse than seeing your own reflection in a photo when done crazy bounce shooting. 2. If you're ever in the position where you have to shoot social event and write down names, whenever you can bring someone with you to write down names, it will make things so much smoother for your entire night. 3. Always pack extra batteries, doesn't matter if its just a 20 minute shooting session, there's nothing quite as frustrating as running out of juice in the wrong time because some of the batteries went bad ( I use eneloops but try to always keep a pack of 16 cheap double a batteries at the ready just in case). 4. For concerts..the draw should always be shooting with available light, but if it isn't favourable, don't be afraid to hand a flash (with a color gel optional) to a friend and make your own light. It's not exactly accurate but the clients ive had love that. 5. Business cards, keep a steady supply of those at hand always, you never know when you might meet a solid contact. I just thought of these, anyone care to add some?