Some basic sushi etiquette tips from my article in Metropolis magazine. http://metropolis.co.jp/dining/local-flavors/sushi-etiquette/ (text follows) If you are worried about the cost of your meal, ask when making reservations what the average price is for an omakase (tasting) course. If you arrive without reservations, it’s best to ask before you sit down. An obvious but oft-broken rule—especially when sitting…