I really like the pack, though there’s still a lot of it I haven’t explored thoroughly. Your questions have made me realise how much I don’t know as I can’t answer at all for most of them and I’m not sure about the rest. All I can say is that for me it’s given a lot more depth to teens and made their life stage a whole lot more interesting. I like the way it gives opportunities for teens to meet other teens and to hang out together. Copperdale is beautiful too.
With regard to Social Bunny popups, I only get an occasional one telling me that a lot of things have happened there lately. Those don’t bother me. Most of my sims don’t use it, mainly only my teens. But a lot more annoying are the regular popups for ThriftTea and for the after-school activities (though I can’t remember how often they appear). I’m not sure why we have to keep being told about these, like with the Henford fairs and Mt Komorebi festivals.