hmmm... I also have a hard time getting off my butt... I like to help people figure out how to do the things that they want to do... so you should probably know what you want to do first... In order to have everyone involved in the trip events and still make decisive decisions about your itinerary, I would suggest that you think about what you want to do, with them. Your INTJ friend will probably tell you up front if there is anything specific that they are dying to do on this trip, but it never hurts to ask. I think that if you need to get the INTJ off their butt, then you need to ask for their help on how to accomplish something. That will probably be enough. Maybe.