Holiday Bike Caper

I'm at my in-laws house for the holidays and have a lot of downtime. I was brainstorming things I could do while in the area and settled on finding a bike and riding all over the neighborhood. Since we've arrived there have been torrential downpours, there are no old bikes to be found and fixed-up in their garage, and I've discovered that no one in the entire city rents bicycles. The in-laws have assured me that one of their family friends has a bike I can borrow. They have this family's garage code, but for some reason I have to wait until the family leaves for vacation to go over and get the bike out of their garage. It seems more like I'm getting setup to spend my holiday downtime in the county jail or hospital.