Odd wording. I don't follow the "no later than forty-eight hours before arrival . . ." I would think the intention would be "within 48 hours of arrival" or no "earlier than 48 hours of arrival". I find the wording confusing . . .

"5A. (1) A person who is fully vaccinated and presents a RTPCR or approved rapid antigen SARS CoV-2 negative test result taken no later than forty-eight hours before arrival in the Territory and his or her vaccination card in accordance with regulation 5 shall . . . "