Well, first check your map -- flying from Holland to Chicago normally takes you past Nova Scotia, so you might save some money if you fly from Holland to Halifax, do your festival, then travel on to Chicago for the wedding.

On the other hand, given that the world is round, you might actually have a shorter hop from Holland to Chicago -- but it's worth checking.

Canada has a lot of Bed and Breakfasts everywhere, and there is one cheap hotel chain that I know of called Day's Inn. Should be others as well.