Definitely a great Spring Training center and fantastic for catching players from both the Padres and the Mariners, as well as the visiting teams. Get there early!
The park has great seats and the outfield grass area is a nice place to watch a game as well. Plenty of hotels and restaurants nearby. I'm not a fan of the Padres or the Mariners, but this is a great place for a Spring Training visit. Include this park in your trip to AZ if you visit at that time to check out the games.