The ride manufacturer calls it a 'Family Gravity Coaster" and their official page describes it as suitable for up to twelve adults and children. I think they ought to know.
http://www.zamperla.com/products/family-gravity-coaster/
I put it to you that if someone else riding a roller coaster on their own makes you feel strange, then the problem is you, not them.
That's certainly true, though I'd argue that paying guests of parks who want to enjoy attractions have every right to do so, assuming of course that they meet the height and weight restrictions put in place by the manufacturer.
Please see my previous comment. I'm of the view that park guests should be allowed to ride whatever attractions they wish once they comply with the height/weight requirements. If a group of teenagers decides to ride a family coaster then they're fully within their rights to do so. It's not like this sort of thing happens constantly anyway.
I don't agree with age limits on rides, as everyone (both young and old) is different.
To use a specific example, in China you'll find coasters where you have to be under 55 to ride, which I find particularly comical. I know of one enthusiast (female!) who made herself look younger with hair dye to avoid that particular embuggerance
Height and weight limits set by manufacturers are there for safety and have my full support. That includes both minimums and maximums.
If a park has designated a ride for the use of children only then you won't find me arguing.
However, if the ride can be ridden by adults when accompanying a child (which you do find in some US parks) then that IMHO constitutes blatant discrimination against a section of the park audience. It would be an interesting case to argue in front of an equality tribunal. That said, in this day and age, taking such a case would probably result in you being labelled as a child protection risk by the chattering classes – which I find very sad. As I said in my earlier post, everyone has different hobbies.
Completely irrelevant to this debate IMHO.