Probably, the "real world" may start to feel like it's creeping up faster, especially because you'll be driving soon, unless you're like me and you don't get your license until you're 18. I didn't feel different, probably because I already felt like an adult before, but I don't know about you.
Being sixteen here made you feel more like an adult, I guess it's coz when you're eighteen, you are an adult here, but yeah, don't know about overseas. You can drive when you're sixteen here. Happy birthday by the way!
No. Well, depending on what bullshit your parents pull. Alot of their sentences will probably start with, "Well now that you're sixteen..." When they say that, you know you're screwed.