Cult of the Coat Check -- Regardless of what time of year you travel, you are sure to face this peculiarly Russian form of hospitality. All museums and theaters (and even many restaurants) will not let you past the foyer unless you take off your outer layers and leave them at the coat check. In the depth of winter this is a welcome way to shed heavy and soggy coats and hats, and it's a service usually free of charge. On a chilly summer day, however, be prepared for a fight if you want to keep your cardigan with you as you wander drafty museum spaces. When you fetch your coats, tips are not expected but are greatly appreciated, even small amounts. You may find that the woman who so sternly disrobed you upon arrival has mended your dangling button.