I grew up calling it pop, and switched to soda after I joined the military. Never used a bubbler, but have used plenty of drinking fountains, and have buckets of water, shopping carts, ants, cricks (with water, and in my neck), and you guys is as common for me as y'all.
'Sfunny... when I moved to Texas, my friends all said: "I can tell you live in the south. You say y'all." To which I always replied - have you never listened to me before? I was saying y'all when I was knee-high to a grasshopper."
But I have never pahked tha cah in the gahrage, even though I've worked in Massachusetts. And I know how to pronounce WisCAHNson.
(and I also say "oofdah" _- learned that in TX from a MN native)