Gorman invites Hewitt to the benefit dinner, which he says will be on Thursday. Moments later, we see a printed invitation, which says "Wednesday".
The "green mamba" is very obviously a nonvenomous python.
When Gorman returns from Indo-China, at least one lion is visible among his catch. Lions have never been indigenous to Southeastern Asia.
The killer snake is described as a "green mamba", snakes which are only found in Africa.