Tipping has become so ingrained that it’s generally impossible to get a decent seat at a cabaret or floor show (e.g. in Las Vegas) without bribing the attendant $5 or $10. Even if all other seats are empty, you will end up behind a pillar if you don’t cross the attendant’s palm with silver. Although it’s customary to show your pleasure or displeasure by the size of your tip, most Americans would have to receive atrocious service not to tip at all (most wouldn’t dare refuse to tip a taxi driver, irrespective of how tortuous or roundabout their journey).