Yes, you can absolutely bring your own food and drinks on Eurail trains. In 2026, there are no restrictive high-fidelity rules preventing passengers from bringing a personal picnic, snacks, or beverages on board. This is actually a highly recommended strategy for budget-conscious travelers, as the food served in the on-board "Bistro" or "Restaurant" cars can be quite expensive. You are also permitted to bring alcoholic beverages in most European countries, though you should always drink responsibly and be mindful of local cultural norms. The only practical high-fidelity limitation is the space available at your seat; most trains provide a fold-down tray table or a small shared table in "four-top" seating arrangements. For long-haul journeys, such as those on the Nightjet or high-speed TGV and ICE lines, bringing a variety of non-perishable snacks and plenty of water ensures you remain comfortable without relying on the availability of the trolley service. Just remember to dispose of your trash in the bins provided to maintain a clean environment for everyone.