If you plan on driving 5 hours, rethink it, and turn that 5 hours into 10 hours of driving time for the same distance.
1). You won't be driving as fast with an RV than you would with the family car.
2). You don't want to drive as fast with an RV as you do in your family car, so you maintain 100% control of your rig.
3). Here's the opportunity to enjoy the drive as much as the destination. Actually, the unexpected side excursions are really the best. Don't lock yourself into a tight schedule, you probably won't be able to keep it anyway. Things go a bit slower with an RV. And if you see something of interest while in route, feel free to stop and see it. Lots of great places to eat, things to see, and even things to do. That 5 hours can easily turn into 10 if you approach it this way.
4). Don't worry about keeping up with the speed everyone else is driving, or you will be an accident ready to happen. Drive the speed that feels the most comfortable for YOU, even if that is 10 mph slower than the speed limit. You need to build your own confidence in your rig, get to know it's limitations, and those things usually happen when the "unexpected" happens. So never allow yourself to over extend your limits. Confidence, speed, and maneuverability will increase with time. But not at first. Don't be a hot shot and be over confident from the get go! You will discover that slower is better.
5). Always drive "safe" over speed. Never assume everything is fine. Always expect the unexpected, drive VERY defensively and be MORE THAN willing to surrender your right of way, even if you really do have the right of way. Passenger vehicle drivers normally do not understand the dynamics of an RV and assume they can stop and go and turn and wiggle as easily as a Volkswagon bug.
6). Jack rabbit starts from stops will absolutely tear up your fuel consumption, no matter what kind of RV you have, drive, or tow. Start from a stop slowly and "play" the stop lights so you can avoid complete stops as much as possible. Every time you come to a complete stop, it takes more fuel and more power to get moving again.
7). DO NOT ride of to a red light and then slam on the brakes, and expect to stop as short as the family car. You really need to start braking and slowing down 3 or 4 times further out than the family car. If you make sudden stops, your cabinet doors may come flying open too and you'll stuff strewn all over your camper, and could potentially cause damage or break items.
Because of all these reasons, your travel time will be much longer than you anticipate. So, build these contingencies into your available time and as you travel, "smell the hamburgers cooking along the side of the road!"
This is my advise for a new RV-er.
Edit:
After experiencing driving an RV a few years, you find yourself driving the family car the same way: a bit slower, slower stops, slower starts, and playing the light, surrendering your right of way, and not getting into a hurry, even going to work and coming home. Its bizarre, but it does happen. And ... you'll take shorter showers at home and constantly use your foot to try to flush the toilet at home! It just happens!
