There are two character breakfasts with the princesses that you can choose from.
The more popular of the two is breakfast at Cinderella's Royal Table in the castle at the Magic Kingdom. When you arrive for breakfast, you have the opportunity to get your picture taken with Cinderella. During your meal you will receive a photo package which is included in the price of your meal. The meal itself is served family style, and is all you care to eat. It is such a fun experience to eat in the castle. The servers called my husband and I "lord and lady", and our daughter "princess". Four princesses came to our table during the meal for autographs and pictures.
The second option is breakfast at Akershus Royal Banquet Hall which is located in the Norway pavilion at Epcot. This meal also includes a photo package in the price. This meal is served family style as well, and is also all you care to eat. There is a "cold" buffet that you can visit which has pastries and fruit to accompany your meal. The princesses will visit your table for photos and autographs. This restaurant also happens to be a castle, and the atmosphere is very nice.
For either meal, I would highly recommend getting your advance dining reservation as soon as you decide. They are both popular, and a lot of fun! To make reservations call 407-939-3463. If you are on the dining plan, you will need to redeem 2 credits per person to dine at Cinderella's Royal Table and 1 credit for Akershus. Also, if you are on the plan, you will need to guarantee your reservation for either restaurant with a credit card. They won't charge your card unless you don't cancel within 24 hours. If you are not on the dining plan, they will charge your credit card at the time you book your reservation for the full amount of the meal. You can get a refund if you decide to cancel, as long as you call at least 24 hours ahead of time.
I hope your husband enjoys whichever you choose!