I do have a starting adventure planned, as a way for the group to have a little practice working together and getting used to their characters as well as those of the other players.  It will have to do with discovering a secret about the lodge, one which will have long-reaching implications for the group and the full resolution of which may take until the end of the RP to accomplish.

And, once we get past that, I have plenty of adventure seeds where I'll start a scenario - like the group going to the beach for a swim day, or hiking in the mountains - and allow the players to play their characters more deeply or just explore the world around them.  This is where being more character-driven will come in; I'll be sharing more of the storytelling at this point, though if we get a little stuck, I'll do what I can to help us get back on track or introduce another avenue of plot to follow.  I'll have to see how well we are getting on after the first adventure to see how well this will work.

The lodge probably works a little more like a small cabin rented for the weekend by a bunch of college students, if that helps in terms of comparison to how it is administrated.  Learning how to work with each other with the limited resources available will be one of the challenges the characters will face.