cannonfodder

I have a family member who is going on her first cruise ever. While she is very excited, she is wondering what provisions would allow her to enjoy the cruise to its fullest considering she needs to eat gluten free foods. I think she realises that there won't be gluten free breads, cakes, pastries, etc. on board but even if she has access to a toaster and microwave oven she would want to break her gluten free bread, muffins, etc. on board. Any comments that I can pass on to her about her concerns?

This would be the September 3rd arrival of RCI's Mariner of the Seas. It is scheduled to arrive at 7 am. Having never been on a cruise, I have no idea how long it will be to get off the ship and into some form of transportation. I also have no idea how much reliance one can put in a 7 am scheduled arrival.

Based on people's experiences, would I be correct in thinking that a 12pm departure flight from MCO should provide adequate safety margin to get from the ship to MCO? Also, in order to get to/from Port Canaveral, what would my options be? I'm trying to decide whether or not to stay the night, before the cruise departs, in Orlando or Port Canaveral. I'm imagining that it would be easier and/or cheaper to find a shuttle from MCO to Port Canaveral, rather than find a ride from an Orlando hotel to Port Canaveral.