Dance competition - have fun!
Schaumburg can be a drive to Chicago depending on Traffic. IKEA is an amazing shopping venture (
http://www.ikea.com/) I do like the little things for under $5... and their food! Best bargains to be had (top floor) Breakfast, lunch and dinner - then you go the first floor (more food, mostly fast food type) to buy the awesome cinnamon rolls, and other Swedish goodies.
Driving into Chicago, keep in mind to park in one of the large underground spaces is cheapest (
http://chicagoparkingmap.com/) We usually park at the Millenium underground garage (
http://www.millenniumgarages.com/) then we take advantage of the busses in Chicago - we get a daily bus pass and use it to get on and off
http://www.transitchicago.com/ This link shows how you can best use it in the "Plan your Trip" option. Since its still early I'd take advantage of the "buy online in advance" option (
http://faremedia.chicago-card.com/)
(we buy our cards at the CVS store after coming into Union Station on the train)
Now that you want to visit the sites - I'd say use City Pass if you plan on visiting more than one museum. (
http://www.citypass.com/chicago)
I personally would skip the double deck tour buss - yes, I've been on it, taken out of towners on it, and it provides a HUGE laugh because its so bad - so slow, and so random in its awfulness! but I know in other towns, its a good bet to go on!
For Chicago - do the boat tour instead! Wendella tours is our favorite - its family owned
http://www.wendellaboats.com/ On a beautiful day, it really compliments the city! Goes down the river, talking about the famous architecture, and heads out to the Lake to show off the skyline.
I also would skip Navy Pier, currently its a huge disappointment, not much there but a few shops, a few restaurants, the Children's Museum and Shakespeare Theatre. If you have plenty of time to wander, it is a nice area, but, if time is short - this is one you could miss - imho.
Willis Tour (ie, the old Sears Tower) is great when it is a clear day - but if you buy the city pass - and stay downtown on Michigan Avenue, you are just fine going up the John Hancock (and for those that want to skip the lines and dont have the ticket to go up - you go around to the elevator to the 95th Floor for a lovely cocktail - higher views, and the best bathroom view in Chicago!!)
http://www.signatureroom.com/ (put your cursor over the different options to see the views!!) IS on the 95th floor of John Hancock - we love getting a cocktail at night as well to see the lights of Chicago. We've taken dd and her friends for a kiddie coctail, its nice to sit and relax and look all around out the windows!
Across from John Hancock, and on the "Mag Mile" (Michigan Avenue) is the shopping destination - Water Tower Place,(
http://www.shopwatertower.com/) now home of American Girl Doll... further down on Michigan Avenue The
Disney Store! In Water Tower is a unique Food Court - you get a ticket wander around order from the different venues, and pay as you leave. (
http://www.shopwatertower.com/dining-entertainment/foodlife)