I have location services on for the following:
Safari
Chrome
Google maps
Apple maps
The weather channel max
I have WiFi set on, but "Ask to Join Networks" off. Bluetooth stays off most of the time. I have brightness set to 50% by preference, and I have my emails set to push.
I also never remove apps from the task switcher... I don't feel the need to. iOS automagically knocks something out of memory if necessary.
That's it really. Oh! My carrier is Verizon. I always have a good signal with them where ever I go in my location.
I never really understood why folks say the iPhone 5 has terrible battery life. Mines been spectacular. I can understand if someone had an abysmal signal and left their screen brightness to a blinding 100%, but that's really the only reason I can see why it'd be bad. The iPhone 5 definitely destroys my old iPhone 4 in battery life!
What's your battery life look like?