We cruised the 8-day Liberty in April, but we went to Panama, and that side of the Gulf. Liberty is a great ship, and we had a wonderful time, but I know what you need are reviews of the ports you'll cruise to. Sorry, I can't help you there, as I've not been to Antigua, or Tortola for a long long time.
To reiterate, Liberty is an outstanding "Conquest Class" ship, and you'll really enjoy everything about her.
See you aboard,