When in the online card builder you can edit the details of your event page on the Page step. There are several settings that you can turn on and off, like RSVPs, adding a note, adding a map, links, comment wall, etc.
Please note that if you plan on taking RSVPs through your wedding website (instead of through your online card), then turn "off" RSVPs and Add a Button. When you Add a Button, you can link that directly to your wedding website. It's best to make the button say something like "RSVP Here!".
Customize your event with all the details you may need, save and preview.
Unfortunately these sections cannot be removed. Invitations or save the dates are typically more stylized, so guests may miss some of the most important details. The “When, Where, Who” sections are a clear representation of the most important details for your events. Our data shows that your guests will most definitely reference it!