By booking your place online you can skip the queue at the meeting point. Alternatively, you can just show up at the meeting point if you prefer not to book ahead of time. Just come 5-10 minutes early if you’ve not registered online.
Reservations for the tour are desirable but not necessary, unless your group exceeds 10 people.
Note that from November 1st to April 1 we run only one Grand Tour a day, at 12 PM!