What are the biggest cultural differences I should expect moving from Canada (or the USA)?

Day to day life in Canada is pretty well indentical to the USA and most of the social faux pas and culture is basically identical.

Beyond the obvious (tea, smaller houses, higher density, less car sprawl, historical) what are the biggest cultural issues/differences that might be a problem when making new friends/connections in Scotland as a Canadian or American that one might not expect?