I love fishing and there is ample waterways available to fish off shore and in a boat. Good fishing and great fun.
I camp every summer at a near by state park with the local Girl Scout group. It has availability for tenting or to rent cabins. We have done both.
Beaches are usually pretty small but so are the lakes. They usually are not too crowded and there is usually a group of people willing to play volleyball and have a great time.
Its rural Minnesota, there is farm within a 5 minute drive. My grandpa is a farmer so I grew up in a tractor and loved every second of it.