What Makes a FamilyGoofs
At the time of Sandy's death, it is obviously Christmastime (Heather asking about decorating the tree/Christmas music playing in scene just before Sandy's seizure; Christmas decorations present after Sandy's death during dinner scene with Janine, Peter and his partner discussing Janine's rights with Heather.) When Janine reads Sandy's obituary, a brief shot of the clipping states Sandy's death date as Friday, June 29, 2000 (which was actually a Thursday.)
At Sandy and Janine's reception, Nora makes a comment to which Sandy replies "I'm going to let that go because this is my wedding day and I am a vision" followed by Sandy and Janine giving each other cake. Later in the film, when Janine is searching for items for her attorney, she begins playing the reception video of which a portion can be seen on Janine's TV. We see the two giving each other cake, then a moment later we hear (from the video still playing) Sandy making the statement to Nora - reversed sequence from the original reception scene.