i love buenos aires and i keep coming back. 1. data eSIM, either get a global (yearly Three HongKong is best - $50) or a local one for $5 (requires passport). the travel ones cost nearly as much as global ones. 2. unless you're american and you're already used to zero fiber in your diet, actively seek to add fiber to your diet. it's very carbs and meat-heavy here. 3. do not pay with card. fx and fees will screw you 5-10% and merchants will hate you. 4. do not worry about cash either. the cash stories on CT are overblown. all you need is @joinpeanut and you can pay anywhere simply by asking for QR payment, in many places you get 10-15% discount 5. stay in palermo or recoleta. 6. the city bike system is really good so you don't need to uber everywhere. subte (local railway) is reliable and very cheap. you can pay with @joinpeanut too 7. it's a late-night culture. dinner at 9pm is normal 8. will post a restaurant and cafe guide next.