Argentinian Spanish (or Castellano as it is proudly called) is pretty unique but there's absolutely no issues communicating from any other Spanish speaking nati

Argentinian Spanish (or Castellano as it is proudly called) is pretty unique but there's absolutely no issues communicating from any other Spanish speaking nation. the issue is the same across all Spanish dialects, each country has unique words and phrases (the word for pineapple is different here vs. rest of Spanish speaking world, one of many examples) and occasionally slightly distinct grammar (e.g. voseo). people are generally able to quickly infer that other Spanish speakers are not native due to accents and vocabulary/grammar. if you're American, think about how you'd react if you heard someone say "mate" in a foreign accent: you'd know they weren't American but may be British, Australian, New Zealander, ... (??)