World of Warcraft will not cancel your account no matter how long it remains inactive, unless you specifically ask them to remove all information from your account. Doing so will not only compelty delete the account, but will also make it impossible to start playing again without starting a new toon.
An hour.
When you get a WoW disc, you also receive one free month of play time. After that, your account lasts for as long as you pay the $15 each month.
Over 90 days im not sure of a exact number.
Yes. As long as your account is active and World of Warcraft has been installed on the computer. However third party add ons that u use will have to be installed.
17 hours
You don't need an account on retail World of Warcraft at all. As long as you have the World of Warcraft: Wrath of the Lich King game client and all associated data files on your computer, you can connect and use any private server just by editing the realmslist.wtf file.
Yes it is. Also you can sign in on your account on any computer with WoW and all the expansions you have.
an hour
To see how long you have played a character, type /played. There is no way to see how long someone on another account has been playing with out an addon, and then you both would have to have the addon.
Try asking Blizzard customer support for the most accurate information. They are renowned for their customer satisfaction, although they sometimes take a long time to get in contact.
World of Warcraft is the MMORPG version of a long-running PC video game series originally named simply "Warcraft". Warcraft may have some online components to it, but is largely a game designed to be purchased at the video games store for a one time fee and then played offline, whereas World of Warcraft has NO offline component and cannot be played without an active subscription with Blizzard Entertainment unless you go to a Private Server which Blizzard doesn't condone.
You do not need to sleep and doing so offers no bonus