Baby shower without revealing the gender.

I'm due June 9th and we're getting ready for the baby shower at the end of March (which we decided to organize earlier than later for scheduling conflict reasons). We are firm though about not revealing gender to anyone, even the closest fam, because we don't like how unnecessary excitement it brings out in people. I know a lot of people are "going green" but how about you all who know the gender but still decided to keep things gender neutral and keep the secret till the end? What's your experience with people's reactions, baby shower organization and general impressions?