We are leaving on the NCL Star from Southampton, UK on 26 October 2022. We are un vaccinated. We prefer to have a lateral flow test. NCL states this should be 3 days before departure. I am OK with all this. However looking at Spain's requirements, which the ship visits, they say if using a lateral flow test it has be 1 day prior to departure. This is a conflict with NCL's requirements. Do I understand the rules correctly as I do not want any problems? Also when they say 1 or 3 days before departure does this mean 24 or 72 hours before the ship sails at say 5pm?