All the liquor and food is split evenly by the number of people, no matter what you drink or eat. My husband doesn't drink, but we still include him in the split. I put this all on my credit card, along with any rental cars, fuel, insurance, etc. When we get home I let everyone know what they owe and we settle up before my CC is due. This way they don't have to bring as much cash with them.

We have a boat kitty, start with $100 per couple, that we use for all mooring ball fees, ice and extra provisions.

Everyone pays for there own food and liquor on shore.

Works out well