Is vacation/"vacances" always treated as a plural?
Yes, "vacances" is plural in French.
The hint says that my error was that I used the 'singular' - vacance - instead of the plural. I'll report it. Except none of the reporting options fits this case.
I don't understand what you're trying to report. You cannot use the singular "vacance". That means "vacancy". "Vacation" is always plural in French.
Isn't the translation, "For his vacationS..."
"Les vacances" (vacation) is only plural in French. Both "vacation" and "vacations" are accepted.
It is one vacation, so why is the translation "ses vacances" ?
"Les vacances" (vacation) is only plural in French.