make sure you guide your gradparents trough everything, i mean EVERYTHING. you read the paperwork before its signed, try to not get them a contract. Its sad to say but alot of elderly people would call and not even know where the power button was and they would get really mad and request to cancel. Any company can be a good thing but just save them headaches and guide them trouyghj everything no matter which company you get them.
you can do that, its called sharing accounts but its not legal.
Guide them trough everything!!! and again read ALL disclosures, all of them!! yes even if the font is super small. And dont get them the contract! unless you know for sure thats what they want.