For full disclosure, I cancelled that NIS cruise for 2019
and would love to go on the one in 2021. Having said that, if you haven't been there before I'll share that the Italy/Greece/Med area in summer is hotter than the surface of the sun while it would be unusual to find that heat in Norway, Iceland, or Scotland. NIS is more of an "outdoor" destination, where there are fewer museums and indoor attractions to visit and more ourdoorsy places to see like waterfalls, mountains, etc. That may help make the decision. Of course, with Copenhagen and Dover added to the mix, you can find plenty of cultural places and museums to visit before and after the cruise. If you have questions about what most people do in those ports, just send me a PM and I'll let you know what we did last time and were planning to do this year.