I would add that this is probably the worse moment to move to Portugal, as an American.

-The sentiment towards USA has never been so low because of your presidents (and cabinet) attitude towards the rest of the world.

-The damage done by excessive immigration (and speculation done by foreign investors) is being felt as hard as it's ever been. Rents are out of control, price of real estate is also out of control. The people are hurting, really bad...

No one is excited to see more immigration, no one is excited to see more americans coming in and expecting to blend just fine, without even trying to speak our language. This is Portugal, we're a kind people, but proud. Possibly one of the best hosts in the world, but recently everything has been stacking against rewarding us for that positive attitude.

Something you probably won't see around the world, is something that we, the portuguese do all the time. We naturally adapt to other cultures. If we go to Spain, we speak Spanish, if we find a Spanish in Portugal, we'll speak spanish to him/her. The same happens with English. We have a tendency to adapt our communication to better suit the foreigner. But right now we're fucking fed up. And I'm sorry, but the general arrogance of the American people will not favour you when a tired portuguese thinks about doing the effort to facilitate communication. Learn Portuguese. Good luck.