I'm right with you. We're gonna wait longer than a week, or at least we're going to try, but that's neither here nor there. In my church we bless babies, so we're gonna have a little get together afterwards, especially since a lot of family will be in from out of town, pretty much just to meet the baby. We wouldn't dream of not feeding them and getting together afterwards!
Now, if my church didn't do this, I'd totally be open to an open house. Plus you don't want all those people to come to the hospital, especially the ones with kids who CAN'T come to the hospital!
Those who are sick can just keep their distance, plus babies are pretty resilient. My five month old nephew went to my brother's house for Christmas Eve and just about everyone caught my 6 year-old nephew's flu, except for a few of us and this baby.
OH! Sorry, okay, that was me supporting your idea; now for ideas: I think nothing says "awesome party" like a Sundae Bar. Just sayin'.
Oh! And maybe you could get someone else to throw it for ya! And to have it at their place. We're not doing ours at our house, so we don't have to worry about cleaning or anything. :)