It's difficult to rate the park itself. I came here for the "Oktoberfest". I couldn't see much of the park because of all the booths.
I can say that the "Oktoberfest" was utter crap. I've been to the real one in Munich. This wasn't even close. First, "Oktoberfest" is not a carnival. So what is with those stupid rides? And when you get a beer, it's in a tiny (TINY!) cup. The real deal you get a pint. Sure, it's still over-priced even in Munich. But at least they give you a decent quantity. Also, the selection was a joke. There was Warsteiner (probably the best of the choices), Bud (are you kidding me?), Beck's, and Shock Top. That's it. In Munich there are about a dozen halls (I didn't count), each featuring a different brewer. Here they expected the crowds to get their beer at a counter, which made for huge congestion and crowding. The proper way is to have everyone sit on the benches (at really long picnic tables) and a bar maid brings you what you want. Much more efficient that way as there are only bar maids running around instead of hundreds of patrons.
Seriously...the Tempe "Oktoberfest" is a complete waste of time and money. Will never go again.
I suspect the park itself might be nice if it's not shoulder-to-shoulder full of people and booths selling junk food.