Our 3 ds have done the kids fishing trip from the Beach Club/Boardwalk. I think the age is up to 12. They must wear lifejackets which my kids didnt like since they are all good swimmers. There they mostly caught sunnies as we call them. They got a kick out of the captain using hotdogs as bait and they got soda or powerade. They had a great time.
We also did the family fishing trip from the Poly. Guess who caught the most fish, me, the mom. We had the 2nd time slot and boy was it hot and the traffic on bay lake was getting pretty noisy. Our guide took us over to discovery island. The guide told us the earliest time is most preferrable due to the summer heat and the boat and ferry traffic later on. You will have a great time. Expensive but well worth it. Its one of our ds favorite memories and they always ask to go on the trip. Just its so expensive. Around $200 I think. Another poster just reported the correct price somewhere.