Tony,
The Port Of Mobile is outstanding. Great staff and a great facility. Get there by noon to ensure you get a parking spot in the garage at the pier.
The Holiday is Carnival's oldest ship, which means it isn't all glitz and "wow". I love the Holiday and will be sorry to see her leave Mobile this coming fall. The Holiday has superb service from a charming crew, and some really good food too. You'll be pleased with your cruise. I have a honeymoon couple on the cruise prior to yours. Say "hey" to them on the pier!