When do you get in to Orlando? If you are arriving late the day the cruise, it may be easier to get a hotel near/at the airport, and then head out to the port in the morning.
If you are arriving earlier in the day, I would recommend going out to the port. Then you can relax, enjoy the pools, etc. We stayed at the Radisson last October, and found it to be a perfectly acceptable hotel. It wasn't the Ritz, but our DD enjoyed the pool, the room was clean, and they have a free shuttle to the port.
Many Diser's are starting to make reservations at the Ron Jon resort. The pool area sounds very nice.
Edited to add: LostGirls: I noticed that you are new to these boards - Welcome! Be sure to ask any questions you have - someone is sure to know the answer! How soon are you cruising? Are you on the Magic or the Wonder?