This cache is available 24/7. You are looking for a nano, but it should'nt be too hard for you. Please use stealth as it is filled with muggles all summer long, especially the holidays.
One of my favorite places to hang out in the summer, happens to be right here. My grandmother-in-law lives real close by and we love enjoying the many lakes surrounding Sister Lakes. If you need some suggestions, feel free to send me a message and I can fill you in on some cool places to see. (non-geocaches)