48-Hour Itinerary for {CITY}

Two days in a new city goes fast and badly if you wing it. Give it your city, arrival and departure times, travel style, who you are with and your budget level, and it builds an hour-by-hour itinerary that is actually doable, not a fantasy list of twelve sights you could never reach. Meals and travel time included.

Build me a tight, realistic 48-hour itinerary for {CITY}, arriving {ARRIVAL_TIME} on Saturday and leaving {DEPARTURE_TIME} on Sunday.

My travel style: {TRAVEL_STYLE} (e.g. slow and immersive, packed and energetic, food-led).
I'm travelling: {GROUP_COMPOSITION} (e.g. solo, couple, family with young kids).
Budget level: {BUDGET_LEVEL} (budget / mid-range / splurge).

Format as a hour-by-hour plan with: activity name, why it's worth the time, estimated duration, and any booking tips. Flag activities that need advance booking. End with one thing I must not miss under any circumstances, and one thing I can skip if time runs short.