We only do small group day tours with never more than 12 passengers. Our tours sell out very quickly and have exclusive itineraries, so we advise you to pay couple of days up front. TThe simplest way to do it is to book and buy your ticket online through our webshop on our official webpage. We advise you to pre-pay online or you can pay directly at our office at least 24 hours before (if possible) so your reservation is 100% confirmed and we can guarantee that your seats will be available. We cannot guarantee that you will find available seats if you only show up at the departure location.