In nearly 20 years of RV'ing I have never used a surge protector. Only 1 time have I had an issue with low voltage. Also, I have had 2 RV's with 50 amp service for a total of over 5 years and probably haven't had to use a 30/50 adapter more than two or three times. I've never had a problem finding 50 amp sites and I don't go looking for them. Just finished a 4 week trip from Nashville to Wyoming. No reservation anywhere and 50 amp every night. If you stay in state or national parks that might be different. Like most things on web forums, the theoretical problems are usually much more severe than the real life problems.