Helicopter companies will advice you to arrive at the heliport anywhere between 20 to 30 minutes before departure time.
But why not play it safe while arriving at least 1 hour before your departure to make sure there's time to settle at the heliport, well also viewing the helicopters landing and taking off.
Once you've arrived at the heliport you'll be given a quick safety briefing, all while trouble with photography equipment or what you are wearing could arise...
So give yourself lots of time to make adjustments and fix any problems that unexpectedly happen.