You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"This card completed my invitation suite. It reflects the simplicity of the invitation. I love the design and it is exactly what I was looking for."
"Purchased these with the matching invitations. I had the entree choices removed from the card and the accept or decline lines dropped down to the bottom of the card. This allowed for extra lines for signatures which is helpful since I'm including a +1"