Little Einsteins Baseball Cap 1st Birthday Invitations?

1st Birthday Invitations? - little einsteins baseball cap

First birthday party for my son is 3 1 / 2 weeks. We allow a theme park with the Little Einsteins. We will serve hamburgers and hot dogs, and I bake the cake.

My husband wants an adult friendly. It is that men and boyfriends have come to win. Since in the park, we want to play softball and Frisbee. How do I find all this in the invitation to everyone to know that this is not just for kids, and make your team baseball?

In addition, we all want to bring the gifts. We simply do not have much room for the things in our house. Is it appropriate to say "no gifts necessary" on the invitation?