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.
"I was looking for an invitation for the morning after wedding breakfast for my daughter's wedding. I loved the way this invitation was worded. The breakfast we are hosting is very casual. We want the guests to come in, grab a coffee and a treat, chat for a bit and then go. This invitation said it perfectly"