There are quite a few National Park mooring balls around the baths. There is a 90 min time limit and you might have to wait a few minutes in the middle of the day. Early and late are the best

As far as water refills, we normally stop in Leverick or Saba midweek.

And congratulations on taking the leap into Bareboating. You will sweat it for the first couple of days. And then enjoy it the rest of your life!! We took our 15th mid December and planning another for summer