With bridge construction taking place, there is currently a detour once you come across into Illinois, to access the Avenue of the Cities exit, you would need to take Exit 2 - 7th Avenue when Illinois bound, and re-take the I-74 on ramp directly from that exit. Otherwise stay heading on I-74 to Exit 4B - John Deer Rd and backtrack towards Avenue of the Cities. This post will be updated with regards to any additional travel changes.
At the reception you may find some street parking available, but lot parking is available directly behind the venue.