Guys, what are your boundaries, how would you react in the following situations?

Your wife/girlfriend/partner would like to go...

1. for a wellness/sport massage where the masseur is a male.

2. for a wellness/sport massage where the masseur is a male and the massage is done for a naked client.

3. for a yoni (female genitalia) massage where the masseur is a male.

4. to a male gynaecologist/dermatologist.

I've got my own opinion, of course, but I'm interested in yours too.

Updates
9 mo
I'm still interested in your opinion.
Guys, what are your boundaries, how would you react in the following situations?
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