VかV-negか vs. V | V-neg vs. Vかどうか

Question

Is there any difference in meaning between these three structures? I think they all roughly mean "whether or not" but are they interchangable? Examples below:

両親は賛成するかしないかにかかわらず、僕は君と結婚します。

vs

明日来る来ないにかかわらず、必ずわたしに電話してください。

vs

明日は仕事を守れるかどうかが不安だった。

Answer 1

All of the forms that you have listed have the same effective meaning and are interchangeable, so long as they follow the proper context. Cross-searching these examples on Weblio, they are pretty much all listed as synonyms, with some seemingly trivial usage differences that I do not think will actually dissuade most speakers from using them interchangeably.

するかしないか standard colloquial

するしない casual colloquial

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するかどうか standard (spoken or written)

するか否｛いな｝か formal (usually written); somewhat pedantic

To use as an example some advice once given by Master Yoda:

「やる」か、「やらない」かだけだ　→　OK

「やる」、「やらない」だけだ　→　OK

「やる」かどうかだけだ　→　a little strange (not quite casual enough)

「やる」か否かだけだ　→　strange (mixing formal with casual)

Finally, 「するのかしないのか、」or 「するのしないの、」 could be used to carry a separate nuance; one of impatience and frustration; e.g. ‘So, are you going to do it or not!?’.

If someone has another take I will be happy to consider editing.