Along the side of the I-10 you'll see a big A and a sign that reads Home of the Angels Spring Training. There you will find one of the most forgettable Spring Training complexes in the Cactus League.
Driving to Tempe Diablo can be difficult. The freeway often backs up around the Broadway Curve and the surface streets don't all go through. Take Southern to Potter and go North, then park along Campus Drive. It is a reasonable walk but you will avoid parking fees and the traffic mess getting out. Parking is exceptionally bad at this stadium and should really be avoided at all costs.
There isn't much around Tempe Diablo which is reminiscent of the Big A in Anaheim. Just down the street is a ton of stuff though, so if you can find a way across the freeway, you are set. The exterior of the stadium is quite impressive and makes you feel like you are at a big league park. The practice fields are just west of the main stadium and, if you walk through the only parking lot, you can wait for the players to come out and sign. They usually do if you get there early enough.
Once inside the stadium, you'll find a small amount of grass seating and a wooden wall in right. Just beyond the wall is the freeway. It really is like Angel Stadium. The main seating bowl is not much either. The seats are crammed and small but they are close to the field. Almost all of the seats are in the sun with the exception of the top 10 rows behind home plate and toward first base. The concourse area is shaded but it is narrow and gets very crowded. You can at least watch the game from it.
The food is pretty disappointing. There is usually a Salty Sinorita or Dos Gringos-type place that has a stand and that is really the most adventurous food you will find. Standard fare everywhere else is a bit disappointing.
In all, this stadium was, at the time, a step in the right direction, but has since become outdated by the newer parks. It is too bad because the location is convenient for most of the Valley and the team is so good.