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.
"The invites are very nice, but the envelopes are WAY too big. I'm trying to find envelopes better suited to the size of the card stock."
"I am very pleased with our invitatons. I could not have found anything nicer for the price. The quality or the paper and print is perfect and the delivery time was phenomenal. They are perfect for my daughter and future son in law's "happy hour shower"!"