Our 2000 Sierra by River Forest has 50 amp. We have never had a problem finding 50 amp service at most campgrounds. We have paid extra only a few times for the 50 amp service. When a CG only has 30 amp, we have a converter cord that downsizes the 50 amp to 30 amp and then yet another converter cord that downsizes the 30 amp to 20 amp! So, we've been able to hook up anywhere.hertig - 7/14/2007 1:26 PM Well now, 50 amp RVs are great - if you can get 50 amp service. Not all parks have it, and very few of your friends and relatives do. Plus, some places charge more for 50 amp service. Look at what you need and how you will use it. And keep in the back of your mind that '50 amp' service has 2 circuits, so really provides 100 amps. You can (with an adapter) plug a 50 amp RV into a 30 amp socket, but you only have 1/3 the current it is designed for. So you have to be very careful what you use at the same time.