Intelligent people are flexible and adaptive.
Fobiacs are not.
Maybe you all are overdoing.
There are many places on earth you can't carry what you want.
Ever thought about that the places on this planet with most freedom, safety and high civilization standards also have the most rules and regulations?
Why you need so desperate a multitool on a cruise anyway? To repair the ship?

Millions of people don't carry knives or multitools and they just survive the day. Really.
So if they can without for a certain time, you can.
Challenge yourself a bit more and come loose from your fixed habits.
Yes you can.
That's one of the stupidest things I've ever read on this forum, and I've been here awhile.
I carry tools on trips because unexpected tasks can occur
unexpectedly. Sometimes things break, sometimes things need fixing. Sometimes those things are big, and sometimes they are small. I can recall several instances where I needed to fix something while on a trip-
The zipper-pull broke off one of my kids jackets. Using the wire cutters and pliers of a multi-tool, I fixed the zipper by re-attaching the pull with a piece of paperclip.
My girlfriends hair dryer stopped working. Instead of just throwing it away and buying a new one like many people would, I do what I do- I see if I can fix it myself. Using the screw-driver of a multi-tool, I disassembled the dryer and discovered one of the contacts in the switch was corroded. I scraped off the corrosion with the multi-tools knife blade, re-assembled the dryer, and it still works to this day years later.
The screw in a pair of my sunglasses came loose. I used a screwdriver in my multi-tool to tighten it.
One of my Fenix flashlights stopped working. Turned out the switch module had come loose in the switch housing. A two pronged tool is used to install and remove the switch module from the housing (by screwing it in and out). I used the tips of the needle-nosed pliers from my multi-tool to tighten the switch and fix the light.
And that's just what I can remember off the top of my head.
Yes, "intelligent people are flexible and adaptive", when such people are faced with a problem, they fix it themselves, and they are able to fix it because they are prepared.
Yes, there are millions of people who "don't carry knives or multitools and they just survive the day". And there are millions of people who live lives of complete and utter dependency, people who couldn't fix something themselves if their lives depended on it, people who only "survive the day" because other people
WITH TOOLS are around to keep them alive.
I choose to be self-reliant in this world. I don't want to be dependent on others to fix every little thing. I don't limit myself to the limitations of others.