I may be wrong, but the "right turn on red" law varies from state to state. Most states seem to allow it. Imo just observe the local's driving and do what they do.
You may be able to find
Strongbow cider in some places. But real cider is not too popular in the US, and seems to be more of a regional thing. Imo drink what the locals drink.
As for pissing off Americans.... I have found Americans to be just about the nicest people found anywhere, and I certainly do not want to piss them off.
They are very tolerant of differing opinions for the most part. But they take their country and it's national institutions very seriously. Do not say anything bad about the flag, the office of the President, American history, the Constitution, the military, American politics and foreign policy or any national symbol or monument.As a guest in their country Imo this is just good manners.
Don't ever joke around at the airports. American airport staff and security personnel have a tough job to do for obvious reasons. Make it a bit easier for them, do what they say, don't fool around and try not to look like you are up to no good