Dennis, first of all I must say, Chicago is a beautiful city. Spent this past just got back yesterday for a short three day trip. Saw the Cubs vs Sox at Wrigley (beautiful park) and had a great meal at bin36 and two great lunches at 11 city diner. Saw mayor Daley there the first time. I must say, the people are really, really nice.
Now to the point. Check out
Chatham Bars Inn. My wife and I got married there almost three years ago and it is beutiful. There is a beautiful little town with nice shops etc and a georgeous beach as well as a smaller beach in front of the inn. yes it will be busy no matter when you go, provided it is summer, but no matter where you go on the cape it will be the same.
Mike R, Dennis-toxic? Hmmm, not near the family's cape house. It is actually quite nice. I am not sure if you mistook Dennis for Heinous, ooops, I mean Hyannis?