Is an Eurail pass worth it?

Only if you plan on taking long-distance trains every 2-3 days. For shorter or infrequent trips, booking individual 'point-to-point' tickets 60 days in advance is almost always cheaper.

Should I pre-book museum tickets?

Yes. For major attractions like the Louvre or the Colosseum, pre-booking saves you from 2-hour lines and ensures you actually get in.

How to plan a multi-city Europe itinerary

Prioritize no more than one city every three days to avoid burnout and excessive travel time. Use a 'hub and spoke' model, selecting three major anchor cities connected by high-speed rail, and fill the gaps with regional day trips.

Pick a theme. Don't try to see the whole continent. Focus on a region like Central Europe (Prague, Vienna, Budapest) or the Mediterranean (Rome, Florence, Nice). This keeps transit times under 5 hours per leg.
Use the 'Open Jaw' flight method. Book a 'multi-city' ticket, flying into your first city and out of your last. This saves you from wasting an entire day and $150+ retracing your steps back to your arrival airport.
Prioritize rail over air. Check the travel time from city center to city center. A 4-hour train ride is almost always faster and less stressful than a 1-hour flight when you factor in security, transfers, and airport distance.
Draft a 'flexible' schedule. Plan your accommodation and train tickets for the full trip, but keep your daily activity list to one 'must-do' per day. Everything else is a bonus.

Is an Eurail pass worth it?: Only if you plan on taking long-distance trains every 2-3 days. For shorter or infrequent trips, booking individual 'point-to-point' tickets 60 days in advance is almost always cheaper.
Should I pre-book museum tickets?: Yes. For major attractions like the Louvre or the Colosseum, pre-booking saves you from 2-hour lines and ensures you actually get in.