Let’s ignore the use of the apostrophe, for all that it is both incorrectly and inconsistently applied. After all, there is a slim possibility that “Party’s charity events” is intended as a single phrase, if a rather odd one.
Instead, let us examine the bold claim of this man (or woman) to be a “stormtrooper look alike”.
Are you a “look alike”, Sir (or Madam)? Or are you, as I suspect, simply wearing a costume?