Yes, to export the posts from your event, go into your account and locate your wall (if you only have the one wall, it'll take you straight into your wall). On the left there is a link that says "Posts", click on that and then on the right side there is a button with three dots, and if you click on that there is an export posts option. When clicked you'll have the options to export posts that were displayed, posts that were blocked, posts that were Stashed, posts still in Moderation, and all of them combined. They'll be exported in CSV format, which is Excel compatible. There is also an option to export all of the images from your wall there.