Revealing mistake: When Bond stops to study the map at the beginning of the Amazon chase sequence, you can catch some brief glimpses of a black object floating in the water. This is actually the explosive charge used to simulate the initial mortar fire's impacts from his adversaries' boats. Keep a close eye on those 'shell impact' locations to spot them proper.
Revealing mistake: When Bond and Chang are fighting in the glass museum, Bond cuts Chang's stick in half with his foil. If you look carefully, you can see a mark on Chang's stick where it is to be cut.
Revealing mistake: When Drax is about to destroy the American shuttle, Bond, at the last minute leaks out all the gravity and everyone starts floating. In the next shot or two when you see Bond starting to float, a wire is visible that is used to make him hover.