Thanks for all the responses... this is what I was looking for. The prices vary quite a bit - we are flying from West Cost (SEA) and I've seen prices where they are the same sometimes, or a $400 difference. It sounds like the Ferry can be an ordeal but can be a way to save money.
On Hotel for after I am looking at Secret Harbor (in St Thomas) or Gallows Point resort or an Air BnB. Sugar mill looks great but the price is up there ($900) and they didn't strike me as kid friendly.
Thanks Again !
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