Here's the link to RV Parks Reviews of Valle Del Oro in Mesa, Arizona.
Since I've been in this park for several years in a 5th Wheel, I'm also a happy customer, so I'm a little sensitive of unfair criticism. Generally, I found the reviews on this website pretty fair, although some are dated. This park is in a state of constant upgrading, so things that were not so good three years ago, may well be improved now.
What hasn't changed is the park's WiFi, especially in-season - still not great. This has everything to do with too many users, with too many devices. The park has spent mega bucks trying to address this, but they're spinning their wheels. Save yourself frustration and find an alternative to park WiFi. We subscribe to Verizon, and this works. Accept that when you travel, WiFi will not be like what you have at home.
Don't plan a vacation here without a confirmed reservation. The waiting list for an ever diminishing number of RV sites is a long one. Especially in-season (J,F,M). Even with confirmed reservations, check before you come to be sure a park model hasn't taken your spot, in which case you'll almost certainly be looking for another park. This caveat pretty much applies to all the better parks in warm locations in the winter. If you haven't heard, the 'Baby Boomers are coming.' Space in the better parks is tight. One way to avoid disappointment is to buy a park model, and this is a discussion for another post sometime.