I am traveling on a Mediterranean cruise on majestic Princess April 2025. I was wondering if there is any advice on port tours in the following places. I have often hired Tours by locals as I find the cruise line tours are often very pricey. Which of the following ports is it not worth just exploring on our own without booking a tour as it does get quite pricey booking tours in each port for 3 people. This is my grandson's first trip to Europe. Any advice in the following ports is most welcomed.
Rome--- we got this as we have been here several times
Naples- my grandson wants to see pompeii. I was considering Tours by locals to do this area and then on to Sorrento
Messina- Any ideas? Can we just walk the area on our own. Is there enough to see in this port without doing a tour?
Malta- no idea
Crete Greece-?
Kotor-?
Dubrovnik= was thinking of just walking around on our own-- We have been there before and I thought he would love to walk inside the walls
Split-?
ending in Venice and spending a few days