Yes. All questions OR requests get a please, and answers get a thank you, or acknowledgement.
Actually, I don't think my son knew that there was a different way to ask a question for several years. The please was tacked on the way a question mark is at the end of a sentence.
It wasn't something I taught on purpose. It was a 'by example' thingmy. As In I phrase all MY questions/requests with pleases and thankyous. And I'd correct any of his lapses as absentmindedly as any other language thing.
Foot, not feets, and yes, absolutely blah blah blah.
"You mean juice please. And nope! Not right now. Thanks for asking. :)"
"Store not stored, and yep! I'm going to store this right here. We store it for years. When we used stored is when we're talking about the catsup, not us. So we store the catsup, or the castup was stored. Wacky, right? So where's your plate? Ah Thankyou. Yes. Please. Gratzia. Molto bene. Oops! Almost squirted that all over, didn't I? Not so brilliant, on my part, quick recovery though saves the day. Thanks for helping, love!"
Meaning that my own running dialogue is peppered with pleases & thank yous.