I have played softball all over Phoenix, a few places in Vegas, and in Pittsburgh. I play league here quite often and don't really enjoy playing here that much.
First off, I know this is corporate mandated, but to pay the amount of money for league is insane unless you have a sponsor. For the price (slightly higher) than every city league, you only get one game a night, instead of 2. You have to sign up for two league which ends up costing over 1000 for an 8 week season. After you pay that for league, you then have to pay $3 dollars to get in every time even if you are playing. ($3 is softball prices, I don't know about soccer or baseball). The rules are also pretty ridiculous. You can lead off and you can't hit the ball anywhere near the pitcher without it being an automatic out. Home runs are fairly reasonable especially if you play in the higher divisions. I will say that they definitely try to keep the divisions fair.
Continuing with the price theme, food and drinks are pretty expensive. It isn't insanely high, but eating here definitely isn't worth the money. I usually go with a pretzel which is reasonable, or the two slices of pizza and drink combo.
Field conditions: The conditions tend to go up and down, mostly relating to how much little league is being played. The spikes/cleats from the baseball players really cut up the all dirt infields. There tends to be some humps or hills in certain spots. The outfields seem to be alright, I never really play the outfield so I can't really comment. I played at the BLD in Vegas and fell in love with those fields. I wish our BLD was built like theirs was. (Although it was for a huge tournament so they probably had them well prepped going into the weekend)
Staff: This is one of the high points of this place. All of the staff are usually in great moods and are super friendly. The bartenders are great and friends with a lot of the regular players out there.
I will say that I do enjoy playing USSSA tournaments at BLD Gilbert. Paying the $3 dollars to get in for the day isn't an issue for me like it is for league. Having the air conditioned buildings are nice to cool off when you are waiting in between games.
Overall, the facility is nice. The fields are definitely cool to play on if you never played here before. The replica fields are fun. They just need to focus on doing a better job with the condition of the fields. I would recommend you playing here if you haven't, especially for tournaments. But if you are not trying to spend a lot of money on league softball, this IS NOT the place for you.