Continuity mistake: Phil put 7 bottles of "Ouzo" in his basket (and left two on the display). When he was driving away, there were 11 bottles of "Ouzo" in the box on his seat. Also, when Phil was drinking on the bridge, the "Ouzo" was dark-colored (but "Ouzo" is clear or cloudy white). (00:15:32 - 00:24:14)
Revealing mistake: When Phil approaches Michael's grave, water ("rain") has already accumulated only in front of the grave. When Phil is kneeling by the grave, streams of "rain" fall behind him and in front of him, but not directly on him. (00:25:03)
