Welcome aboard, Minerva!
It's great to hear that you'll be checking out the
Disney Wonder as it sails out for the weekend in October. These short trips are very short -- so be prepared to be a little jam-packed with activities. It will feel more like a teaser, so just be warned that this trip might make you want to book another Disney Cruise that is much longer.
Fish extenders are coordinated by guests on their own. These are not Disney Cruise Line specific activities. With that in mind, each voyage can be different, as it will really depend on the guests coordinating the gift exchange during your particular voyage. You can check on the online forums to see if there is a group participating for this trip, and you can join in on the fun if you'd like.
The Disney Wonder is a small enough ship that you can get from one end to the other, fairly easily. You'll find your bearings quite quickly - and you can familiarize yourself with the layout of the ship prior to your trip by checking out the Disney Cruise Line site. There will be lots of activities, so make sure you check the Daily
Personal Navigator for all the activities that are lined up on this short trip. Use of the App is free while onboard, you'll just need to relaunch the App when your first embark to allow the data to populate.
I hope this helps, Minerva. Please let me know if you have any additional questions that I can help you with.
Have a great day!
~ Dolly