I have all of my photos uploaded to Shutterfly which made it very easy for me to create this guestbook for our wedding. We used the boarding pass Save the date, an awesome passport wedding invite and continued with the "travel/passport stamp" idea for our guestbook and even table "numbers". Here is a link to the guestbook which only cost me $40 since I got 30% discount and Free shipping! What a steal and it was a huge hit. You should be able to click on my shared link below to see it.
For our Table numbers at the reception we printed photos from each of the cities we've traveled to together (Rome Italy, Santorini Greece, Clearwater beach FL, etc... We had a photo of us in the destination on each table and this corresponded with the guests adorable little favors which doubled as placecards. I'll try to make another post with photos of everything since it turned out cute.