DCL suggests that you arrive before noon...so you're in plenty of time there. With a flight arrival at 11:30, you should be on the bus by noon and at the port before 1. The lines seem to move quickly no matter what time you arrive. You might want to grab a quick snack at the airport as you won't see lunch till at least 1:30 - 2 pm, by which time the kids will be starved. There is a McDonald's at the airport. Just re-read your post...no kids...so you're ok.
If you use DCL transfers, they will handle all bags, etc.
If you booked your flight thru Disney, they will hold the ship if your plane is late. If you booked your own air, YOU are responsible for arriving at the port on time. This means that if your flight is late/cancelled, it is your problem.
Friday nite wedding? That would probably mean no way you can fly in on Friday evening. We really prefer to arrive in Orlando the evening before and stay at an airport area hotel (booked on Priceline for about $35 for 3*) It just gives us the added security of being in Orlando early...no worries about weather messing up flights, etc.