Hi Julie,
These links should get you in the right direction.
Rustlers Rooste is a unique dining experience with fun entertainment.
Wildhorse Pass is an entertaining casino environment just off the I10. This link gives you what attractions are in the area - from Wild West experiences to golf. It should prove useful.
Arizona Mills Mall is where a lot of dining, shopping, and nightclubbing is found.
The temps are already in the 90's here. Be sure to keep drinking water easily accessible at all times to avoid heat stroke. It is not humid here and many people don't feel the effects of the heat until it is too late. I would make sure the hotel in which you stay provides pool access. Whenever possible wear clothes that are breathable, like cottons, and avoid synthetic blended or heavy wool items.
Welcome to Arizona! Enjoy your stay!