Totally agree the ship was relatively safe in Haifa Harbor. It is an Israeli Navy port and a ways from Gaza, but not Lebanon.
I do not agree they should have let the tours continue. In the opening hours, I am sure there were and still are concerns about attacks within Israel reacting to Hamas’ call to arms. Tour buses are easy targets.
Thankfully we were not in Ashdod, as scheduled for Monday. Well within rocket range of Gaza.
Also, consider that With hundreds on overnight tours to Jerusalem Sun-Mon and the ship sailing Haifa to Ashdod on Sunday night without those guests, getting them out of Israel would have been a mess as the ship would not have pulled in to get them.