Baby shower question??

Katie • Mommy to a wonderful baby boy!!

Ok so I'm throwing my own gender reveal/baby shower. I want to know if it's ok to put in the bottom of the invitation gift cards preferred? My last baby shower I knew what I was gonna have this time I won't. And I'm doing this all in one because doing 2 or more parties is just a pain and time consuming. I do not have time for that. I work full time and have a 1 1/2 yo.