I'm about two thirds of the way through this game and I'm really enjoying it. The operations are a minor part of the game and hard enough without being impossible (unlike in Trauma centre, where I found the operations to be frustratingly difficult). The rest of the time you go about talking to people and showing them objects to trigger responses from them. Sometimes if you show the wrong object at the wrong time it can change the course of the story, so you have to think carefully about what you're doing. I like the stories and the characters, and there are random little mini-games that pop up and are quite fun (like fishing, or catching snakes).
Also, some games, including ds games give me a kind of motion sickness (nausea and headache) but this one doesn't which is a huge bonus for me.