We did a Windjammer honeymoon too. We sailed the Flying Cloud in the British Virgin Islands in 1999. It was great!! I have only been on one other cruise- a Carnival 4 day cruise, that I probably wouldn't repeat.
Pros:
*very casual- no dressing up for dinner, although my DH did get lightly chastised one morning for not wearing a shirt in the dining room.
*if you care to, you can help raise the sails. Most people did this the first day only, but it was fun.
*smaller ships=less people. The chances of hanging out with your fellow passengers making new lasting friendships is better on the smaller ship.
*smaller ships=smaller ports of call. The Windjammers can pull into ports that can't handle the large cruise ships. We saw some really unique places.
*RUM PUNCH!! 5 o'clock every day- Free rum punch on deck!
Cons:
*if you are prone to seasickness, you will be more affected on a Windjammer than a big cruise ship. I am very sensitive to seasickness, so I was very worried about this. How I got talked into a sailing honeymoon, I will never remember. I felt a little nauseous on the first night, but took a dramamine and went to sleep. Next morning, I had my sea legs and it never bothered me again that trip. Some other people on the boat had those prescription patches behind their ears and reported they worked well. I didn't hear one report of seasickness after the first day.
*menu choices- if you are very picky, this may be a problem. They usually have 2 choices at each meal
*cabin size- one word- SMALL! Every cruise ship's cabins are small, but windjammers take it to an extreme. We had a honeymoon room so it had a queen bed, it hit 3 walls. If you book a standard room, there is a better than average chance that you will be in bunkbeds, although the lower berth is usually large enough for 2. Top berth good for storing suitcases.
Overall, we had a great time, and would recommend it. Especially if you are an active and laid back type of person. If you like to be waited on and like the frills of a big cruise ship, it is probably not for you. We are planning to go back for our 10 yr anniversary.
BTW, stczt- you were on the Fantome? Did you get the book The Ship and the Storm? We were in planning mode for our honeymoon when that happened- it was so sad.
Sorry for the novel, OP. If you have any questions, feel free to PM me.