When I inquired the rep about how accounts that would still be under their contract plans -- what they told me was you'll still have locked to contract for full-term of the contract, however, adjusting rate plan / service (probably with some limitation -- like reducing lines) won't affect your remaining contract -- so you may want to check to see if there's any way you can make adjustments without any consequences.

Awesome! Will give that a try. Thanks :)

You can generally change rate plans within t-mobile, as long as you keep all your lines of service that are under contract.

If your offer included promotional discounts on the monthly rates, you will lose those discounts.