<human>: Can you give me the gist of the text in a nutshell?

Hello weddit! This might be my first official post here! My fiancé and I got engaged a few weeks ago, Sept 13th. We're diving headfirst into planning and trying to get as much done as possible asap. 

We *just* secured our venue, a beautiful local art gallery here in Chicago, and our date, October 11th, 2015. We are, however, very lost on how to properly word our invites due to the weird structure we're planning for our wedding and reception. Our venue can only hold 70 people for a ceremony and seated meal but between 150-175 for a standing event (there are two floors that we can rent simultaneously). We both have rather large families and friend groups (tentative guest list was at 200ish) but the venue was the most important part to us and we're willing to cut whoever necessary to make our venue work.

Here's the unique part: We're going to have a brunch wedding with our ceremony beginning at 11am. We're going to invite 70 of our closest friends and family to the actual ceremony. At approximately 12pm we will begin our reception and we want to do a more open reception as the capacity for a standing event is closer to 150-175 between the two floors. 

How do we differentiate the wording on the invitations to make it clear to the other guests that they will only be attending the brunch reception and not the ceremony itself?
<bot>: 70 people are invited to the ceremony, everyone else is just invited to the reception. How do we word our invites (two different wordings) to specify who's coming to what?!