Longchamp bags are a dead give away that you are American (sorry Marg and Aunt Mary…you’ll never pass as Spaniards)
Don’t take water fountains for granted! They are nowhere to be found in Sevilla. I don’t understand how more people aren’t passing out on the streets from the heat in combination with all the walking that is done here.
Don’t play soccer with 10 year old Spanish boys. You will lose.
Doing a non-commital nod when you aren’t sure about what is being asked of you can be dangerous.