Hi,
    This isn't technically an etiquette question but anyway . . .   We are limited to a certain # of guests based on the maximum occupancy of the room at our reception venue.  Therefore we have an "A" list and "B" list for guests.  I was hoping people would share with me how many of our guests will most likely rsvp NO.  I feel it's risky to invite everyone on both lists (about 140 people total and maximum # allowed is 100.  However I have heard that approx 20% of your guests Usually cannot come.  If you would share how many people you invited and how many came I would greatly appreciate it!! Thanks in advance
Additional info-it's a semi destination wedding in Cape Cod, MA.   Most of our family and friends live in NY and CT.  I do have some family spread out across the west coast so a lot of people will have to travel.