I've been enjoying these posts, love the details. One basic sailing item I haven't seen on this list yet:

Make certain that stopper knots are in all of the appropriate sheets and lines.

We didn't notice until our fifth day that we were missing a stopper knot on our outhaul for an in-mast furler. Basic, but I never want to try and fish an outhaul out of a boom!

We take our microfiber towels with use and ignore the terrycloth towels provided. They dry in five minutes. We also take insulated water bottles and refill from gallon jugs as needed.

A lesson learned, if you put a 6 gallon case of water in a deep aft locker you will be getting down there to pull it out! Someone else mentioned frozen gallon of water to keep the adult beverage cooler chilled - works great!

Cheers, RickG