At the wedding, Sandy is holding her bouquet in both hands in close ups, but in the long shots, she is holding it with her left hand and her right arm is hanging by her side.
Vi's watch was not a flexible band so it shouldn't have come off of her body until she began to decay. Additionally, he found on a beach what appeared to be dozens of yards from where she fell into the ocean.
When Tom and Sandy are walking on the beach in an early scene, for a brief moment there's a black object on the right side of the frame, as the camera is tracking left. It's likely a microphone, or part of the camera equipment.
When Tom takes what he believes is Vi's body from the ocean, her hair is relatively unmussed considering that she fell from a height, and was in the ocean overnight.