I develop at home. Since I develop sheets in trays, it's probably the only way. Plus, I don't want to pack and carry chemicals and all of the other stuff. I bring a couple of boxes of film, a couple of empty boxes of film, some making tape (to keep the film boxes closed), and a changing bag. Then I'll unload the film holders at the hotel and store the exposed film in the empty boxes and reload the film holders with new film.
I'd rather use the extra space in the car carrying extra cameras than development tools. I really enjoy bringing my 3D camera on road trips! Those are a lot of fun to look through and remember. Plus, I like to bring a digital camera, so I can snap a million photos without wasting time and money. The digital is also great for wild animals, stuff you see on the side of the road, longer hikes, and family photos. The large format is best for the stuff you can take your time on and know you'll want to print.