Yes, travel insurance is worth having for a Disneyland Paris trip, though the honest reason has almost nothing to do with danger. France has strong, well-developed healthcare, and Marne-la-Vallee, the Paris suburb where the resort sits, is about as low-risk a destination as this guide covers. The real case for coverage is family-trip cancellation and interruption: multi-day park tickets, on-site hotel packages, and dining reservations are often non-refundable, and a sick child or a delayed Eurostar connection can unravel an expensive itinerary fast.
Paris itself has excellent hospital care within easy reach of the resort, so this is not a destination where evacuation logistics matter the way they do elsewhere in this guide. What matters instead is whether your own arrangements travel with you: check whether your existing health cover extends abroad and specifically to France before you assume it does, since EU residents may have reciprocal healthcare arrangements that visitors from outside Europe do not.
The practical risk at Disneyland Paris is almost entirely about disruption rather than illness - a missed connection into Paris, a family member unable to travel, or a park closure affecting a tightly booked multi-day visit. Look closely at trip-cancellation and trip-interruption cover, and confirm it responds to prepaid, non-refundable park tickets and resort packages specifically, since some general policies treat theme-park bookings differently from a standard hotel reservation.
Winter travel into Paris occasionally brings snow-related disruption at Charles de Gaulle or on Eurostar services, which matters if your visit is tightly scheduled around a short break. Keep any airline or rail delay documentation, medical notes if a child falls ill mid-trip, and receipts for cancelled bookings, since claims here are won or lost on paperwork. Check your policy's definition of trip interruption before you travel rather than after tickets have already gone unused.