Instead of a guest book, try a polaroid scrapbook. Make sure the polaroid camera has plenty of film. Wedding guest can strike a pose then leave their photo on the guest book, together with their short message for the couple. INSTEAD OF GUESTBOOK IDEA
"Midsummer Night/Kupala Night Lanterns": marking the shortest day of the year (June more than floating Chinese lanterns were released over the Warta River in Poznan, Poland. Its a real life Tangled moment!