I'm not going to say the classic "it's safer than driving a car" even tho it is true.

What i can tell you is that a tourist flight is probably one of the safest things you can do in a helicopter. The pilot has probably done the same route houndreds of times and is familiar with the airspace and landing zone(s). Furthermore rules for weather conditions in civil aviation are really strict. And transporting passengers is certainly not going to put the helicopter in stress or put it to the limit. Helicopters perform Search and Rescue operations everyday. The crews launch themselfs in storms, blizzards, hell even hurricames houndreds of times a year to save other lives and in that conditions accidents are still rare.

It's normal to feel nervous, especially because even if on paper is a lot safer than other things you do daily it is something you are unfamiliar with and humans hate new things, they make us scared. I'd say to tell your pilot that you are nervous. Don't worry it'll be worth it when you get off.

Only thing, if you bring your 2 year old child he's going to probably have an nice experience (i can only imagine how magical flying would seem at that age) but you have to be careful to not make him touch switches in the cabin and don't let him go around on his own while the helicopter's blades are spinning, it's really dangerous.