Loved the whole experience here - walking over the bridge from downtown, they had bands playing, people gathered everywhere, and multiple bars around the stadium. Got great seats for pretty cheap ahead of time, and it wound up selling out, with a good really involved crowd. Went to the Primanti Brothers to try the famous sandwich (wasn't all that impressed, but that isn't the park's fault) and it was pretty easy in and out.
Definite five stars, but I still would put San Fran's park as the best of the ones I've been to.