In the Pixiv description, Mizuki-san notes that he wanted to get another look at these scenes, so he carefully screened through the official video sent to him by the wedding hall. However, thanks to camerawork and scene editing, they were all very neatly omitted. (Mock annoyance follows.)
Or maybe the sandal had something to do with her size, the situation now becomes hilarious which would explain why the umbrella on the left is chuckling.
Truth tag? This always happens to me with flip-flops...
Just Like a HovercraftSwffWhssCeremony of the Three CupsFwinggWhsshssPfft...The Three-Times-Three Exchange of Nuptial WineFor more info: Click Here.TakKhss-hss