cruise lines does not appear to be improving. JP Morgan Securities analyst Brandt Montour said in a client note that data from SimilarWeb shows total volume — which includes desktop and mobile visits — for Carnival, Royal Caribbean and Norwegian Cruise Lines tracking down 74% year over year, which is near the lows to date.Montour said the decline is not surprising, given the cruise operators have mostly stopped marketing efforts, but it does contrast with recent operator commentary that bookings are getting less bad.