Video Cameras on Vacation?

I've always been one of those people who looked at people filming their vacation and thought "wow, you're never going to look at that again." After seeing my coworkers very brief video from when we were in India, I've thought maybe there's some merit in it. I love taking pictures but there's just some things that are better in video. I rock a dSLR but wifey has an Canon SD630 that does some pretty nice clips so I've always thought we've had it covered.

I'm not film maker, I don't necessarily buy into trends but I'm thinking making a movie for friends and family of our upcoming trip to Japan would be kinda cool. That said, do I really want to carry around a video camera in addition to a dSLR? I have one that's about 7 years old and works great for racing but I couldn't imagine carrying that. So that has me thinking that maybe I should pick up something small to carry around on our vacation. Were I to do that do I go solid state or MiniDV? Am I just looking to get more electronic crap for no real reason? Am I going to hate having to carry it around?

Feel free to chime in.