That is interesting. Thanks on the Colon point. We stopped at Panama City and not Colon, although in doing our excursion from there we went to the Atlantic Locks by Colon. So I suppose the advice is then to check Country requirements, the Ship/line requirements (and finally port requirements…?.) I did know that some CIs require it though and it may also be dependant on where you have come from as well! Easy Peasy!? Thank goodness then we were OK, but clear that for the future I need to do more homework!