I suspect since they focus on folks whose work isn't regularly made into multi-million dollar blockbuster movies, there's not quite the celebrity appeal of, say, Comic-Con but from all accounts I've heard, it's a solid festival and does a great job celebrating cartoonists. All the events are free and open to the public.
This year, they've launched an Indiegogo campaign to help with costs. I don't know if I'll be able to make it to the festival this year or not (although I did just get an appreciation of just how close this actually is to my backyard!) but I'm checking my finances now to see how much I can afford to donate.
I'm highlighting their campaign in part to drum up some more funding for them, but it's also just to bring wider attention to a festival that generally doesn't get covered in the comics press. So even if you can't donate, please at least take some time to check them out.