It was a fun hunt to do with the kids (13 & 8 yrs old). If you book through Trip Advisor, you'll get a code. Then you need a create an account on the provider's web site and enter the code. It was a bit long, but used the helpline and it got answered right away, so was ok. Once you get to the first designated area, it is pretty easy to follow the next steps. We did it over 2 days and took about 1.5 hours each day (we took our time). I gave 4 stars instead of 5, since I would have appreciated a link with google map (or equivalent) to walk through the hunt and show us how to get from one place to another (would be a nice addition). :)