When I was thinner I was asked to do age play about 3+ times an hour when I was on Streamate. It was probably 1 in 3 talking potential customers asked me to do age play.
Now, typically guys don't outwardly say it, but when they ask me if I do "roleplay" I know they're either going to ask for that or incest. And now it's probably at least once an hour. I think the fact I have much larger boobs now typically makes them not ask.
Have I ever done it? No. My first ever job I accepted was age play related but the guy didn't tell me until after he paid. And I tried going with it but I was too uncomfortable with it and he apologized and said I could keep the money. I guess he had the money to trap girls in jobs without telling them prior what he was paying for.
The youngest I've ever been asked to play? Usually they don't actually tell me, but the youngest I've ever been asked about was probably 6, or 4? (the first guy, wanted me to tell him stories of me being beaten with a belt at 4) On cam though, I never get asked to play below age 12. It's kinda hard to have boobs and fake something lower than that. I still say no, and most guys typically understand or get uber offended and leave.
In the past, when I was asked to do it literally almost every other request a LOT of guys got butthurt when I simply just said no. They'd say things like "Oh, you have a cupcake blanket so." Or "Well you have a pink stuffed animal in the background, so you kind of look like a little." I used to love pink and cute things. Always wore cute things and pink. These guys kind of ruined that for me. Being told constantly how I am definitely a little (when I'm most CERTAINLY not) kinda ruined the pink aesthetic and shabby chick furniture I had.
But I still said no, firmly. And I will always say no, firmly.
I don't have anything against age players, but I find great disgust with people trying to force it on me because I was small and had a cute kawaii face.