A baby shower is fully supported on My Joyfullday: it has its own library of gentle designs and a complete guest site, not a wedding template pressed into service. The page carries the parents' story, the date and place, the theme, a registry note, and a reply button, and it grows into a schedule, directions, a dress-code note, a small FAQ, and a photo gallery if you want them.
That matters because showers attract questions. Someone asks the address twice, someone else wonders whether partners are invited, a third wants to know if they should buy from the registry or bring something. Each question lands on you unless the page answers it. Write the answer once, in the right section, and every guest who opens the link reads the same true version.