You can shower, including washing and conditioning your hair, in only 2 liters of fresh water.
When talking on the phone you say “Over” at the end of sentences.
Reggae island cover tunes played at ear splitting volumes any time of day or night no longer bother you, in fact you often sing along.
Sitting on the head with one foot braced against the wall and one hand gripping the countertop is standard operating procedure.
You find yourself in near paralytic panic at the grocery store when faced with two different brands of any one item.
Picking bugs out of the flour/rice/beans/anything edible no longer grosses you out.
Your “purse” is a roll-top waterproof dry bag and in it you always carry a Leatherman and a bottle of Tropical Strength Aeroguard.
Within 24hrs of arriving in port after a passage you know where the best grocery store, market and chandlery are, where you can get water, do laundry and have a hot shower, who offers free or fast WIFI and which bar has the best Happy Hour.
You judge how expensive places are to visit by the cost of fuel and the price of beer.