We did the rehitching ceremony at the Garden Grille on Oct. 6. It was very cute. The staff comes to your table and announces to the restaurant that you have been married for 15 years in my case. They also ask the tables next to you if they were invited to the first wedding. Mickey Mouse joins the staff in "rehitching" you. They bring a cake to celebrate, which, by the way was delicious!!! My 5yrDD videotapped the whole ceremony. We also had DS 4 with us. Staff took photos for us. Very cute and memorable. Ceremony is free. You must request this with your PS, even if CM does not know what you are talking about. Also when you get to the Garden Grille, mention it again to the desk prior to being seated.
Certainly worth it. The restaurant revolves while you eat. Food was good, especially the salad, which is grown in Epcot. Food is served family style in a large skillet brought to the table. Strip steak was also very good. Kids had worms in dirt for dessert. They loved it of course. Did I forget to mention this is a Character Dinner? Chip and Dale and Mickey and Goofy were there the night we "rehitched".
Hope this helps you to decide to go!