Is this a program run by USNA Admissions?
If so it will probably be the same thing in Naperville that it was in Chicago and wouldn't provide much more info.
However, if you find out it is being run by a Parents' Club, Congressman, or if it says something about "OPINFO" it might be worthwhile to go to because every one of these will be different
I will warn you that there is not that much to know about Naval Academy admissions and going to a bunch of briefs on the process won't help you that much in the long run. Just work hard and don't laugh when your detailers make fun of your classmates and Plebe summer will be great, and then plebe ac year is like a cynical version of high school on steroids.