Its been 10-12 years since the last time I was there but its cool to stop in a see it and to say you were there.
There is some different shops in the place that alot of malls dont have and to do some of the rides in kind in the Park is fun. I used like the roller coaster myself.
The Lego store was cool as well always had the real hard to find stuff there.
But its tourist trap, Lots and lots foreigners there.
Personal I would hit up Downtown Minneapolis. Lots to do there and some dam great places to eat. On of my Favorite is this place. Brit's Pub 1110 Nicollet Mall. Had some damn great burgers and banger and mash as well.