DR Laura, I'm at about 30. I owe a lot of people since I haven't had a party since I moved here, and since most people haven't seem my house, I have only had a couple regrets. I haven't heard from 4 or 5 people, but at the "friend's" request, I sent out a reminder and a map to my house yesterday and 4 others I hadn't heard from said yes. The forecast is really hot...like 90s with over 100 heat index, so I'm expecting most people will want to be in the air conditioning. My house is not "open concept" so it makes it a bit difficult to have that many people in the house at one time. I know it will be fine after I clean from top to bottom, but adding 3 more is a bigger inconvenience that it would be if we could all just sit outside on the deck