It will depend upon where your hotel is located. Expect to pay $40-45+ from FLL to South Beach hotels. You can do a mock booking on the Uber and Lyft apps to get a better estimate.
Welcome to the boards! 😎
I would look at hotels in the Rocky Point area ( Chase Suites, Hampton Inn, etc.) - pre-Vivid several hotels offered park and Cruise packages including shuttles to the port.