Thoughts on baby sprinkle?

My mother in law planned a baby shower for me, but she ended up cancelling it because she didn't feel like it. So my sister said she will throw a baby sprinkle party a few days after we bring baby home from the hospital. How long should you wait to have the sprinkle? I'm a little worried that baby being exposed to so many people in the same day could be bad, but other people are telling me all will be well if I make sure everyone washes hands, uses hand sanitizer and doesn't kiss her face.