Would an apostrophe + S be necessary in this instance?

No, Pole. But the rule is somewhat vague, the technicalities of which I don't comprehend, in spite of a lifetime in the field of journ.

https://www.google.com/#q=apostrophe+to+indicate+plural

I'm trying to think of anyplace the apostrophe would be used to form plurals. . .
Can't. . .

It's quite common Neo


A string of 3's across the top of the page

Ending his sentence with a series of phht's

He has many CD's

Don't give me any if's, and's or but's

I don't think so, Dale.

Uhhhhhh. . . . Dale. . .
Pour yourself one more. Then have one for me.
Seven 7s here.

Splurge a little. Crown Royal for holidays and festive occasions. Otherwise, VO.

no

It wasn't necessary. A lot of people do this, and it's usually wrong (although some words, such as do's and don'ts, can take an apostrophe s as a means to make them plural but hats is the plural of hat. No apostrophe to be found).

See: http://www.grammarbook.com/punctuation/apostro.asp

But the apostrophe in do's is there to avoid confusion. The apostrophe in don'ts is for the contraction.

I am an apostrophile, BTW

I absolutely agree with you and I can see my sentence was confusing. The 's is needed for do's. But don'ts doesn't get a second apostrophe. There's one for the dropped letter and that's it.

Rog, Neo: I certainly will make a point of it, loving The Brew as I do. But I still don't understand how I have apparently misunderstood

Going by the strict rules of pluralisation the correct form is dos and don'ts. No apostrophe for the plural of do, and none for the plural of don't. To a certain extent it is a matter of style. I prefer the strict one.

Lynne Truss allows do's and don'ts.

The Chicago Manual of Style 16th edition: dos and don'ts

Oxford Advanced Learner's Dictionary: "dos and don'ts (also do's and don'ts)"

Merriam-Webster: "do, noun, plural dos or do's"

The apostrophe version is marginally more popular in American English books, while the apostrophe-less version is significantly more popular in British books. And at the British National Corpus, there are eighteen examples of "dos and don'ts" but none of "do's and don'ts".

The use of the apostrophe to signal pluralization for plurals of coinages, letters, numerals, and abbreviations is not a question of grammar, but of typography. It is falling by the wayside; it is a dated convention. Originally intended to forestall confusion, it is now thought by most to cause it—as evidenced by the debate above.

Yea Con, guess I do live in the past

So do I, Dale. It was much nicer, at least in my own mind.

Somehow Rog I have to agree. However we do have more cures for various diseases, and availability of the Imported Brew has multiplied dramatically