how much is too much?

My hubby comes from a family that is constantly in one other's business and quite frankly they probably know what I do on a day-to-day basis. I come from a family who hardly ever gets together and talks on the phone a couple of times a month (sometimes once or twice a week at the most if my mom is in town). I feel suffocated. He can't figure out why I don't want to make weekly plans with his family. Something is always cropping up and they are on the phone multiple times a day--everyday.

How much is too much for you?

Update: We did have dinner and, just to make a fool of me, we had a great time. It's hard being a curmudgeon.