Nearly the same thing here. We're scheduling for our daughter who, as she's getting older, has increasingly more scheduled events, too. If we're out of the house and my wife hasn't brought the paper calendar with her we simply can't commit to any plans. It's excruciating.

The cobbler's children go barefoot, so I haven't come up with a good solution for us... >sigh< It almost makes me want to hitch my wagon to a hosted product/service. Almost.