On our Lagoon 42 for 2 weeks, we burned 110 gallons. Ran get at least 12-14 hours a day and winds were light so motored or motored-sailedmorethan I like. Delta fuel was about 3,35 a gallon IIRC. Moorings $30 a night except BEYC.

Leverick is wonderful with free water fill and a bagofice if moored or docked. I believe our dockage was $35-40 with $20 additional for shore power. Would plan water every 2-3 days depending on how frugal...and how many bodies.

Bigger expenses likely eating/drinking out.

Kitty suggest $250-300 per person to include groceries (and we often buy some dinner with kitty if eating habits same) as well as taxi fees/ boat beer/liquor. Then divide left over $ at end of trip... I prefer not to have to add to kitty.

Many ways to do it (If some are not drinkers, would not include alcohol in kitty expenses.