Havana operates unlike anywhere else, requiring expectation resets. Internet connectivity remains limited and unreliable — prepare for digital disconnect. Two currencies existed until recently; cash (preferably euros) still dominates over cards. Classic car culture provides tourist transport at tourist prices; local buses offer adventure. Old Havana UNESCO sites concentrate in walkable ranges but pavement punishes shoes. Mojitos and daiquiris cost fractions of international prices in local peso bars. Salsa music permeates everything; watching versus dancing experiences differ entirely. Paladares (private restaurants) outperform government establishments consistently. Shortages affect availability of everything from toothpaste to specific foods — flexibility required. Casa particulares (homestays) deliver experiences hotels cannot match. The Malecón seafront promenade comes alive at sunset with locals socializing. Despite openings, US restrictions still complicate American visits — research current status. Cigar shopping requires navigating genuine versus fake products — buy from official shops only. Revolutionary sites remain prominent; political discussions require sensitivity.