If our port arrival time is 11 30, what time would you suggest planning on getting there by? We're driving from West Palm so planning on about a 3 hour drive.
If you define "port arrival time" as when your car gets off 528/A1A and onto 401, then get there at 11:30.
If you define "port arrival time" as when you physically set foot in the terminal, I'd say get there at 11:00 to drive through the security check, drop off your bags with the porter, park, gather your carry-on stuff, secure your car and walk to the terminal.
Since they really don't enforce the PATs, as
@Billinaz said, bear in mind that arriving
late - like, after 12:30 - has its perks. You may need to park near the top of the garage, but the lines at security and check-in will be very short, and you can almost just walk onto the ship without dealing with the crushing horde.
Plus, Cabanas will have thinned out so you'll have plenty of seating options, and by the time you eat, your cabin should be ready. No wasting away with fifty of your best friends in the muggy stairwell waiting for the belt barrier to come down.
All that having been said, if this is your first
Disney cruise, you are probably chomping at the bit to get on the ship ASAFP. We understand; we've all been there.
