I had not heard of Fringe Festival until Walter and myself started taking writing classes. I did think about checking it out this year, but ended up deciding to put it off til next year. We'll, plans changed.
I ended up going to four shows this year. All were well done. I had a slightly different experience than some, because I was attending the performances with one of the performers. It felt like we were part of a special club, and maybe we were.
As I said, all four were good, but there is no test to get your show in, and all are amateurs. I do plan to see more next year. I don't think I would recommend it without an unlimited pass. I think the point is to check out a bunch of new things, and be ready to see a few less successful attempts.