Barcelona punishes poor planning and rewards flexibility. Book Sagrada Família tickets months ahead or face sold-out disappointment. The T-Casual card covers 10 Metro trips cheaper than singles. Beach areas near Barceloneta attract pickpockets who target obvious tourists. Lunch menus at local restaurants offer three courses for €12 — the city's best value. Dinner doesn't start until 9pm; restaurants empty before then. La Boqueria market serves tourists; Santa Caterina market feeds locals. Accommodation in Gràcia and Poble Sec costs less with better neighborhood character. August heat combines with local holidays — many authentic spots close entirely. Gothic Quarter nights buzz with energy but morning light reveals the architecture. Flamenco shows targeting tourists range from authentic to embarrassing; research carefully. Tapas ordering means small plates shared communally; pointing works when language fails. Vermouth culture peaks Sunday afternoons in traditional bars. The Bunkers del Carmel sunset view rivals anything ticketed. Park Güell requires timed entry; arrive early or during siesta hours. Cash still matters in traditional establishments despite card prevalence elsewhere.