I am soooo not a fishing person. My DH, however, loves to fish and just recently bought his dream bass boat. That said...
...my husband and 2 sons have done the WDW fishing twice and absolutely loooooved it. I didn't go because it's not my thing so I opted to sleep in. I think a lot of what you get out of the experience depends on what your preferrences are. If you're like the other poster who finds fishing rewarding by having the fish dinner, then of course WDW's catch and release program wouldn't be your thing. The two times my guys went out it was more for the time they got to spend together doing a father/son thing. Of course it's Disney and the guide knew the good places to fish. They caught a lot of sizeable fish, took great pics, and had a lot of fun. According to the DH, the guide was also very helpful with the boys even offering to watch after their lines so Dad could turn his attention to catching a few himself. Both trips were wonderful. The kids both still rave about WDW fishing. For my family the fishing was worth every dime and then some. I guess that's why the guide got really nice tips both times.
Oh, the OP asked about location. The first trip was from Wilderness Lodge, I think. I know the 2nd was from the Contemporary. Both times the DH drove our car over to the resort. It was very early and I don't think the Disney transportation was running then. DH stated that launching from the Contemporary was easier for him because it was easy getting in and out. If you don't have your own car to drive to the different resorts I would mention it when making the reservation. Perhaps arrangements can be made to accomodate your party. Worst case scenario you would need to catch a cab at least on the way over if you do the early excursion.