I always forget something. There is a little twirly film advance indicator above the flash-ready light. If you have a Trip Jr., pay attention to it. I took this camera with me on a recent trip and got nothing. I had accidentally hit rewind at some point and the film wasn’t advancing. The camera still makes motor noise so the only way to be sure is to look at the advance indicator. On the plus side, rewind on this camera leaves a bit of film out of the canister so I was able to reuse the film.