[JSmith2007]

Alright, here goes my things.

Dayton - Splash Moraine, by far one of the best waterparks evar.

Chicago - I don't know when you're going, but if you are before XMas, definitely go to Michigan Boulevard and/or Navy Pier. If not, still go and visit the amazing streets full of fun stuff to do. Many casino are in the region too - Harrah's, Horseshoe, Mystic, many others within say 30 minutes.

Madison - Wisconsin Dells anyone? Themepark capital of the world. Ho Chunk is nearby as well (casino)

Minneapolis - There are some great, great golf courses around the Minnesota area if you're interested. Canterbury also nearby (big poker place)

Bismarck - Prairie Knights Casino is around Bismarck if I remember correctly, alot of forestry/wildlife too. If you could, make it down to South Dakota and visit Mount Rushmore.

Billings - Alot of casinos around this area too. Not sure, but last time I was there (yeah, I've been to Montana too lol) there were like 5 within a 10 mile radius.

Seattle - Obviously the Space Needle, the Boeing Plant offers tours, definitely interesting when I was there years ago.

No clue about rental cars, the one that comes to mind is Hertz, but I don't know prices or what not. I do alot of traveling too, taken many similar trips like this, always tons of fun.