"Take this with a grain of salt, because I am not as familiar with the European dialect." Actually as expected in Portugal, they have many dialects too. There are four main Portuguese dialect groups, all mutually intelligible: Central, or Beira, Southern (Estremenho), including Lisbon, Alentejo, and Algarve, Insular, including the dialects of Madeira and the Azores. There is even an extinct one, https://en.wikipedia.…
I grew up on and off in Brazil (Rio de Janeiro and Brasília) and later spent 20+ years in the SF Bay Area. Once in a while I'd run into old-school Azoreans who'd lived in the Portuguese towns (Santa Clara, Newark, San Leandro, Half Moon Bay, Pescadero, Castro Valley) for a few generations and it was almost impossible to understand them until I started listening occasionally to the Bay Area Portuguese radio station. I'd mimic those accents and got a bit better at understanding those folks, but with cost/benefit ... Brazilians have said I now sound Portuguese, and Portuguese people say they can understand my Portuguese better than a normal Brazilian's.
I'm not sure how it's changed in the last decade, but in many SF Bay Area and Central Valley towns there are Portuguese "Sociedade do Espirito Santo" (Holy Spirit Society) halls and Catholic churches where Portuguese/Azoreans maintain their traditional festivals and music.
I think Neto's shut down its huge Santa Clara restaurant/market and reincarnated in a strip-mall/sausage-making operation, but at least a couple years ago you could still go and get an excellent Linguiça sandwich.
EDIT: Sociedade Espirito Santo, Neto's