"Mergem atunci când vrem."

Translation: We go when we want to.

[nickbii]

What, precisely, is 'atunci' doing in this sentence? Is it acting an intensifier?

[Renardo_11]

More or less. You could translate it by “then:” We go then when we want to, though it sounds a bit weird.

[Jeffrey136200]

"we go whenever we want" is better English and is accepted.

[BlossomCoeur94]

Is "atunci" obligatory here?

[sebastianmolin]

No, I modified the acceptable answers. Thank you for reporting this!!