In my variant of English, no, I don't use them -- not in everyday conversation, at least.
1) I'll be back soon ...
2) Should I get some drinks?
3) You'll do exactly ...
4) What should we have ...
I do hear the second one sometimes (Shall I ...?), but not the others, except very rarely.
Everybody knows them passively, of course, because they do come up once
in a great while in conversation and, more frequently, in written form.
I'm a native speaker from California, if that makes any difference for your survey!
CJ