The main advantage to being able to speak at least a little Spanish is that I get to be privy to both sides of stuff like this:
Pair of ladies with a couple of push carts gets on elevator speaking Spanish, and this makes the elevator really crowded.
They realize the elevator is going up when they try to push the buttons for lower floors, and comment (in Spanish) “Oh…I wasn’t paying attention. It’s going up.”
Two guys on the elevator comment to each other (in English) that there are ten other elevators, and they’re irritated that these ladies crowded the elevator up.
The ladies pay them no mind, but are laughing and talking (still in Spanish) about the idiots who think they don’t understand English and are talking…uh…mierda about them.