Before visiting Pompeii in 2026, the most important thing to know is that pre-booking a timed-entry ticket is now mandatory during peak seasons to manage the daily cap of 20,000 visitors. The site is massive—roughly 170 acres—and requires a minimum of 3 to 4 hours for a basic visit. Comfortable, closed-toe walking shoes are essential, as you will be navigating uneven, 2,000-year-old basalt cobblestones that can be punishing on the feet. There is very little shade, so high-SPF sunscreen, a hat, and a refillable water bottle are non-negotiable (there are ancient "drinking fountains" throughout the site with potable water). In 2026, the "Pompeii for All" accessible route is the best way to see the highlights if you have mobility issues or a stroller. Be aware that large bags and backpacks are prohibited; you must leave anything larger than 30x30x15cm in the free lockers at the entrance. Finally, consider entering through the "Piazza Anfiteatro" gate rather than the main "Porta Marina" entrance to avoid the heaviest morning tour-group crowds and to see the amphitheater first while it's still quiet.