My experience traveling to the Netherlands as an English speaker is that people are speaking English, but they're drunk!
There's a meme about how Dutch doesn't seem like a serious language to English speakers, and what's funnier is Dutch speakers trying to figure out why it's so funny to English speakers.
https://knowyourmeme.com/memes/english-to-dutch-translations
As someone who took German in high school, Dutch had my brain flailing for vocabulary to understand but nothing connected.
When they seamlessly switch from English to Dutch I feel like I’m having a stroke: all the same intonation, the same accent, but nothing makes sense any more