"The yellow fever requirement is not in effect at this time but may be reinstated. " SINCE WHEN!!! Princess kept informing us that unless we had our slip for the shots we would not be allowed on the plane, never mind the ship.. FYI... our shots were covered by our insurance company qs "prevention".. Just so happens that we are going for a booster on Tuesday.. because we are off to Egypt next year.. We did have one years ago for Peru.. but that expired..