I feel like answers to a lot of the extracurricular/club/outside opportunities will really depend on who you ask (and to an extent, what year in school they're in). Talk to someone who's the president of 3 clubs or a class officer and they'll tell you it's effing grand. Ask someone who's not that involved and also doesn't have a club for her interest area, and she will tell you it kinda sucks. So I personally wouldn't put too much stakes in that, unless you're asking about a very specific thing like "is your Christian Veterinary Fellowship very active?" Same thing for "do you have enough free time? Is it doable? How are scholarships? Research opportunities?" kind of questions. You'll get a huge range of answers and no one answer is necessarily applicable to you. I mean, ask away, if even just to indulge! That's what you're there for, but I wouldnt take those responses (either very positive or negative) too seriously.
And take curriculum info with a grain of salt unless you're talking to someone who's gone through all of their didactic years. Many tour guides are first years, and they'll tell you alllllll about anatomy and physiology and stuff... Because that was their life. But give it a year, and the first year curriculum is nothing more than a fond memory, and really has no bearing at all on the rest of your training.
Attrition rate is important to ask IMO. Even if the guide tells you that a majority left for personal reasons, you should maybe think and pause a little if you know a school tends to lose 8-10% of their first years every year.
The most important thing to ask in terms of curriculum, I think is how clinics is run, and what students get to do on clinics. But that's really really hard to gauge for anyone who's not in clinics. Hell, I couldn't properly evaluate what I thought of my clinical year until I was half way through it, nevermind being able to compare it to another program...
