Okay, "quiet vacationing" kinda works in this case, but the “quiet x” thing is officially overused now. I’m this close to writing an article about Quiet Loudness...

Oh, damn it, that should be a thing. It's when saying nothing is saying everything, like when ideas are pitched and nobody wants to get behind them, or when companies ask employees to fill out surveys and nobody does it because they fear retribution.

https://www.cnbc.com/2024/05/21/millennials-would-rather-take-secret-pto-than-ask-their-boss.html