Berlin rewards those who arrive without expectations from other European capitals. U-Bahn and S-Bahn trains run on honor system but plain-clothes inspectors issue €60 fines — validate tickets. Cash dominates surprisingly; many restaurants and bars reject cards entirely. Sunday closures affect almost everything except restaurants — stock up Saturday. Nightclub culture starts after midnight and extends through Sunday afternoons; dress codes barely exist. Museum Island contains UNESCO treasures but individual tickets add up; passes save significantly. Döner kebabs here represent unique Berlin cuisine, not just fast food. Apartment-style hotels and rentals beat central hotels for value and experience. English proficiency runs high but German attempts earn appreciation. Neighborhoods like Kreuzberg and Neukölln offer more than Mitte's tourist focus. Beer gardens activate whenever temperature exceeds 15°C. Flea markets on Sundays at Mauerpark combine entertainment with actual bargains. The Wall's remains scatter across the city; East Side Gallery concentrates murals. Winter darkness descends by 4pm; summer light extends past 10pm. Cycling infrastructure makes bikes practical transportation, not just leisure. Smoking persists in many bars despite European trends elsewhere.