I’d say, as you did, go with the local flow is a great tactic. Still it’s so easy to come off as naive and touristy. Soon after I moved to France I had lunch with an American friend who has lived in France for years. We’d both ordered sandwiches, then I asked for a cup of coffee with mine. She rolled her eyes. In France sandwiches aren’t consumed with coffee. Coffee is also served after dessert—not with. Coffee ends a meal…..
You learn in time. The difference between living in a foreign country and visiting one.