OK, I just took my new Canon 5DMkII out of the box... haven't even taken a quick snap with it yet. I've been shooting with the 7D for the past several months, so I don't expect any major adjustments for getting used to the controls, etc... but I do want to break it in at the county fair this weekend, and that will include some daylight shots and some low-light shooting at night. I'm planning on taking the 24-105mm f/4 IS and the 70-200mm f/2.8 (non-IS) with a Manfrotto monopod. I do intend to push the low-light limits a bit in this situation, just to see what I can get away with, but I've never done any night shooting before, and I've never shot at a fair before, either, so mistakes are inevitable and I expect to learn a lot from the experience. Obviously, this is an opportunity to get some candid people shots, some motion-blur shots, and (of course) the required ferris wheel shot.
Having said all that, any advice and suggestions before the fact are greatly appreciated.