Thanks for checking with Comcast.
Most of the Bethany community seems to be dissatisfied with Mediacom on the Bethany blogs I subscribe to. A lot of outages and slow connections all year long.
And yes, Mediacom does have a seasonal/vacation plan that cuts the cost in half for the 6 winter months (Nov-Mar). You do have to ask for it each year, but you do get ser vice all year and do not have to return any equipment.