FAQ
The short version of everything in the guides — what people actually ask before they go.
Yes. Crater tickets are sold only online, on the park's ticketing site, and entry is in groups of 60 visitors every 10 minutes. You can buy up to 30 days ahead; tickets can't be cancelled and the date and time can't be changed.
Don't count on it. The mobile signal near the entrance is very weak, so buy before you reach the Quota 1000 square.
The path is 3,807 m long in total, tops out at 1,170 m and climbs about 140 m at an average 14% gradient. Allow about 3 hours there and back.
Some do and some don't. Several transfers from Pompeii and Naples include park entry; the tours page says which. Check each product before you book.
Yes. Day trips from Naples and Sorrento pair the crater walk with Pompeii, and one full-day tour adds Herculaneum.