Make sure the notebooks don't look alike just so you know immediately which is which and don't have to fuss with opening it, reading, and realizing it isn't the one you wanted/needed. Or just put a label on the cover of each, but I don't know how open you are to having "ROLE PLAY JOURNAL" plastered on the notebook ha ha! Plus, it can keep people from bugging you about what that is or what kind of novel you're writing when you're in that flow. And I love that there are ways to make things available offline so I can get that writing done without having that internet lure. You can always just open your browser and pull up all you need (if, say, you have a layout for a house saved but can't save it to your computer because it's one of those right-click disabled images) and then disconnect. As long as it doesn't automatically refresh (like gmail, for instance), it should be okay. That's also just if you have/need a lot of info but don't have the space to have too many windows open. Too many windows can also be distracting anyway, or they are for me.
Again, just talk to your partners. They should be understanding. If they aren't, it can be an easy signal that maybe it is time to cut back from them. But I've found most are understanding (and some are even working on books themselves or participate in NaNoWriMo at least so they can relate/understand).