No, you really don't. Order one scoop, MAYBE two. But really one is enough. Even with two, you're probably gonna feel like you ate too much ice cream, you'll throw it away, or you won't eat it fast enough so it melts. Ordering three or more scoops is just ridiculous of course. Just order one damn scoop. No one ever regrets ordering maybe too little ice cream.
I always regret ordering too little ice cream. I will eat an entire pint if nobody is around to shame me for it
My gf can eat a 1/3 kg without being saciated but won't eat a whole burger.