I have been to all the SSW and they have gotten much more crowded since the first one. You do get to "meet" the actors but you must wait in long lines to do so. Even then it is just a quick meet and autograph signing. Sometimes you will run into them in the parks, at the resorts, or at PI after the official time is done.
If you do not go with the expectation of meeting all the actors there and having lots of time to talk with them, the weekend can be enjoyable. And if you also like to take time out to do the rides, you will be pleasantly surprised to see the lines aren't much longer since most of the crowd is waiting in lines for autographs.
I tend not to wait in line for autographs but to just use my camera to take pictures (I prefer a live picture than an autograph head shot) but occasionally I will wait in a line if the line is short...last year I got Thorsten Kaye (from Port Charles) and A Martinez (from GH) without waiting for more than 30 minutes. I have had some luck the second day very late with shorter lines. I have also had the opportunity to talk with Lynn Herring, Linda Dano, Finola Hughes, Robin Strasser and a few others just by bumping into them in the parks. Most are gracious enough to take a few minutes, although, they do have Disney CMs trying to pull them to their next stop so don't be upset if they can not talk or talk long.
I have also heard stories from other attendees for seeing them at the resort the Friday prior to the weekend and at PI that night also but since I live in the area, I do not go stay at the resorts.