I have been to many events at the convention center - Sportsmen show, Bridal Fair, Auto show, Creative Memories Convention, etc. - and I am always impressed with the space they have. They even hosted a convention of convention spaces last year.
What is nice, is that they not only have some large spaces (and I have been in the big groups that have needed them), but also smaller spaces (if you have a smaller group or need to split into small groups/training sessions).
And, as long as the food is part of your cost, it is pretty good (though the concession prices are high).
So for any event (even weddings) check out the Minneapolis Convention Center.
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