Do I have to book Torres del Paine campsites in advance?

Booking is mandatory for Torres del Paine. You can only hike the W or the Circuit of you have all accommodation booked in advance (and it gets booked out fast, so get this done as far ahead of your planned visit as possible), as well as paying the entrance fee for the national park. This is the case whether you’re camping or staying at lodges, and you will need to show proof of accommodation bookings and having paid the entrance fee in order to enter the national park.