Our system is still working just fine. Trip to Fla last summer and once we got south of Richmond, it held the signal and would reacquire if lost. But, in order to acquire the signal the first time, we may have to push the button to move it back into search mode, on average 3-5 times.
Still using the same receivers DirecTV sent me in 2013 while we were at Fort Wilderness when I made posted my original response.
Safe travels. Depends on what time of day you leave and what your personal preferences are. We leave eastern Long Island around 5:30 AM - 6:00 AM on a weekday and check traffic on Google Maps as we get into Delaware.
Then make a decision as to whether or not we're staying on 95 or taking 896, to 301 to I-95. That route takes you through Waldorf, Md where you will hit a stretch of traffic lights, is preferable if Baltimore and DC look like there's traffic or if a rush hour is approaching.
Usually stop somewhere in southern NC. RVacation campground in Selma is right off i_95 on the east side. Carolina Crossroads in Roanoke Rapids is nice also if looking for a campground.
Pecan Park on the north side of Jacksonville is easy on/off, reasonable with long, pullthru sites and 50 amp.
We arrive in Fla on day two, around dinner time after the one stop and either head to Tallahassee, spend a night or two in Jax visiting friends or arrive at Disney's Fort Wildernss around 8:30 PM that second day.
Safe travel and have fun!