There are a few hotels in the vicinity of Bayside Marketplace in Miami, which has tons shopping and restaurants , and you can actually see the POM from there. I have stayed at the YVE right across the street and they offer a shuttle from the hotel to the port for around $7 pp, and I believe SAS transportation will drop you off at the hotel., and they usually cost $15pp from FLL to that hotel., or look on SAS transportation to see what hotels they pick up from in the FLL to bring you to POM.