The premise:
To smuggle booze onto a oversized, overpriced boat full of booze.
Theory:
"I just have these cheetos, granola bars, and this pristine, unopened 6-pack of propel for kicking hangovers from the drinks I'll buy aboard. That's all. Move alone."
Reality: There's booze in them there propel bottles. Sucka.
So these mini-merlins said if you dip the cap end of an unopened bottle into boiling water, you can gently twist the top off, pulling with it the ring-seal intact. Then do with the liquid as you will, and screw the cap/ring back on, and you have the illusion that the bottle is and has been sealed.

I purchased a ringed 6 pack of propels and kept all bottles in the rings to add to their virginity look.
Step 1:
Twist the cap to release the in-the-cap seal, being careful not twist the cap too far and break off its lower ring. You'll hear and feel an initial breaking of the internal seal.
Step 2:
With the cap twisted as far as it will go without having to jump over the bottle's ridge that breaks the ring off, flip the bottle upside down and dump out the propel, until the bottle is empty.
Note: Step 2 is somewhat optional. I thought step 2 may be necessary because its way easier to heat up the lid/ring without any liquid in the bottle. And you need to perform step 3 with a loose cap for the boiling water to take full effect in and around the ring/cap, and you don't want propel coming out all over the place. I didn't perform this smuggle technique without doing step 2. Omit step 2 at your own risk.

Step 3: Microwave a cup of water until vigorously boiling. Remove boiling water with hot-pad and flip bottle upside down and soak in water. I held the cap/ring/lid in the boiling water for a good minute to make sure it was plenty soft.
Step 4: As soon as you have soaked the lid for long enough, remove, and gently continue to twist cap off, using the end of a bottle opener or knife to pry up, and twist the ring along with the cap, as to remove both pieces together, in-tact.
You may have to practice on a few bottles. This is the hardest step.
Step 5: Fill bottle with a clear booze. Preferably vodka, so you can give it to me.
Step 6: Throw the intact cap/ring assembly into a newly boiled cup of water and let sit for a good minute.
Step 7: Carefully screw cap/ring back on, being sure not to break the ring from the cap. If you didn't break the ring off at all, congratulations. Its as good as drunk.
If you did break the ring some, no big worry, proceed to step 8.
Step 8: If you have broken the ring off, you may want to invest in a good plastic glue. Not the walgreens bond glue, instead I chose an instant glue used in radio-controlled aircraft assembly. You can find these products at your local hobby store. These high quality super glues bond in less than a minute and are nearly as strong as the plastic itself. *caution* It also glues your fingers to other things very well...including other fingers.
Simply run a bead of a good plastic glue at the union of the ring and cap and press the ring up snug against the cap and hold for a minute.(This is done with the cap/ring twisted back on) Wipe off any access/signs of being glued.
Even if you get the cap/ring back on, without any breakage of the ring, you may want to throw a small bead of plastic adhesive under the cap/ring area to temporarily bond the cap to the bottle to throw an illusion of a "pop" or "cracked virgin plastic seal" sound, should they give it a quick hand-tightness check.
I also ran the same steps on a basic water bottle with the same great results.

I scrubbed the Internet for cruise ship forums, where obviously, this topic was very common.
The overall consensus is, and which I totally agree with, the cruise lines strongly advertise that they will not let you board if you are caught smuggling booze. It is in their financial interest to do this.
However, there have been no cases, of all the discussions I've read in which this rule was actually enforced to that extreme. Not to say they couldn't, but they will admit, there is more money to made off of you whilst you enjoy their alcohol and gamble and buy stupid shit while you are on board than your initial ticket cost.
It looks like, worst case scenario, you have your booze taken, and you have to buy theirs.
Here's my preliminary plan of attack-
In my checked luggage: Smuggled 6-pack of propel tall-boys, using the booze technique outlined above.
One loose liter bottled water, boozified.
One large bottle of shampoo, boozified (still on the fence with this one...thinking of gluing on my own foil-seal using industrial strength plastic bond glue, using a foil seal from another of propel's bottles, the one with the twist/sport top.
and finally, One real bottle of cheap vodka, as to say "I was vaguely familiar with your alcohol policy, and took a chance with this bottle. You took it from me (which according to many cruiseship forums, doesn't happen that often, even with this obvious smuggle technique) and now I have to buy your booze."
Except I have way more booze in here, smuggled, and I will throw up somewhere that I'm not supposed to.
There you have it.