guest list question

For everyone who already sent out invites:

How many people that you invited are unable to attend? 25%?

I'm trying to get an idea of what the average is because I can't go over 125, but my guest list is about 160, and I'm afraid with my luck, they'll all come!

I am in the same boat girl.

We are both getting married at Coral House and we have the same room- Nantucket Deck.

I only wan 125-130 the most. I will probably invite 150.