We see these questions almost daily on WW - what's the standard RSVP rate? How many RSVPd to your wedding? Et cetera et cetera. And the answer is always that it doesn't matter what anyone else's RSVP rate is; you could be the bride who has a 100% attendance rate or a 5% attendance rate. Which is completely accurate advice, btw.
But I guess my question is, were you surprised by the number of your guests that attended or declined? That is to say, did the bride with the 100% rate invite only her closest family and friends who all lived nearby and therefore knew that almost all would attend? Or did the bride who had very few guests choose to get married on Christmas Day, and knew that less would be able to make it? Was it a totally opposite scenario, thus throwing you off as far as expectations?
Or were you expecting the standard 20% decline, and that's what you got? Enlighten us :-)