I'm taking my Turbo on a cruise soon and will be paying crazy prices for WiFi on board to keep in touch with my email (family business means you are NEVER 100% on vacation!). What all do I need to change so that it minimizes the use of background WiFi. I'm assuming I need to tell the Play Store & Amazon Apps to NOT do automatic updates. Is there anything else obvious I can configure? I'll be turning off Mobile Data so I'm not hit with that. I plan to turn the phone off at night and maybe even during the day when I'm going to busy for a couple hours. Just don't want to burn through my WiFi allotment (300MB for $40) before the week is over. (Looks like the day I'm in San Juan, PR I can turn on my mobile data as Verizon considers that part of the USA and not roaming.)