Not really, but it depends on the source of the installation and if the source is on the net the type of connection you use.
yes,
Many products on the market today require wifi to work. Many of the smartphones today require an internet connection of some sort, usually wifi, to be able to download apps or do anything really on the phone.
From what i hear, draw something does not require wifi.
no
Data is wifi. The only way a smartphone can use wifi without having a data plan is when it is connected to wifi at a building.
No, unless the place you are at require a charge to use their Wifi, but normally it is a free service
Yes, it will require an internet connection. Just like Skype ;)
You may be at a location that doesn't have wifi connectability. Or, you might be at a wifi location, but you might not have wifi settings (Settings > Wireless & Networks) turned on. Furthermore, even if you do have it turned on, that location might require a password to use it.
No, it does not, you can work inside of your network and do not have excess to internet.
yes you do. the two main ways to get on the Internet with an iPad is 3G or wifi so if u don't have 3G you need to connect to wifi.(There's also 2G but I think you only use that in areas where 3G isn't available if u have 3G on your device)
You can buy on at Best Buy. They have many to choose from and decent prices for them. Let me know if you need help installing it.
No you can play Vice city without WIFI as it is a offline game.Offline games do not require any connectivity to the network hence no WIFI required.