Here are some of the fun errors I've made over the years. Forgot the mount that attaches the camera to the arm. Forgot the batteries. Forgot tapes. Didn't get the camera turned on. didn't get the deer in frame.
There are many others but these are the ones that stand out. Filming adds a lot of fun and also difficulty to the hunt. It's wonderful when you get it right but the first year or two you'll get frustrated and you'll have decisions to make on passing a deer because you can't get it on film or setting the filming aside and shooting a good buck. I do wish you the best of luck and it sure can be fun