Based on what they told you a 4 day cruise to bahamas on Royal it is either the Majesty or Monarch.
Taxes for the Majesty for two are $160.52
Taxes for the Monarch for two are $116.00
Just get all the information before signing and agreeing to anything to make sure there is not a catch.
Sounds like you have to attend a presentation of some kind by the agent. Possible timeshare sale.
Good luck! Hope it works out for you. Who would not like to go on a cruise and only pay taxes??