american english - The case of "y'all"

What cases can "y'all" work in?

A prior question asks about the 'proper' usage of "y'all", but it and its answers only address nominative case (all examples are nominative).

I think that there are some cases where "y'all" doesn't work as is.

For example,

• nominative: "Y'all come back now, ya hear?"




• accusative: "I'll ring y'all up tomorrow after the fish fry."




• possessive: "Bring y'all's swimsuits. The pool will be open." (or "y'allses". yes, I find this is questionable usage)




• vocative: "Hey y'all! Where's the keg?"




• but instrumental/dative/indirect object?: nothing sounds right.

? I'll bring the BBQ over to y'all.

? This party is all for y'all.

These don't sound right to me. The alternatives that sound right to me would be:

I'll bring the BBQ over to you all.

This party is all for you all.

Can anyone confirm my usage? Has there been a study/paper on this?

I ask because most pronouns in English have forms for different cases, so it is not given that "y'all", though a synonym for "you" which only has a different form in possessive case, would or would not have a different form.

Answer

If we accept that y'all is an acceptable second person plural pronoun, they're all strictly correct (although I assume you meant "I [will] ring y'all up," and I would have to look up the rules regarding compound contractions like "y'all's").

As one raised in the Midwest by a Southern mother, they all "sound" fine to me, and I wouldn't have any problem using any of them if the situation called for it.