We disembarked from the Star Legend on Monday, April 11 in Lisbon. We had our antigen test on board Sunday afternoon for our Monday flight back to the U.S. Several passengers made arrangements for tests at 7:00 a.m. on Monday, for flights Tuesday. The medical team on board was great, very professional and handled all the testing very well. I'm not sure how many tests they could do on departure day so you may want to make the arrangements early on the cruise.