I'm trying to figure out how much cash to take with us on our trip. If it matters it's 8 people for 14 nights.

Cash for ferries, if I read correctly there is a $3 per bag fee and a $10 departure tax from St. Thomas, on top of ferry ticket price.

Cash for taxi to/from airport

Cash for taxi to boat

Cash for some moorings. I figure we will anchor some nights and can use a card to pay for some nights.

My biggest question is for those of you who have some sort of a kitty you put money in to draw out for misc items. How much do you start with? I realize every person / trip is different, I'm just trying to get a gauge.

Thanks!
Suzanne