fwiw, in the US, the iPad contracts are generally month to month. If you decide you don't want data, you can simply have the carrier turn it off, then turn it on when you need it. The only issue is that you need to pay the going rate when you turn it on again. For me, I am still grandfathered under the original iPad unlimited data plan which is no longer available so I end up paying every month.
10/27/14 at 3:43pm