I even just use the Google Maps app on my phone sometimes when I'm looking for RV parks. It's convenient, and has contact information I can use to just call to verify their availability. Luckily on road trips I've never HAD to use an RV outlet, but I have used the NEMA 14-50 outlet at a campground I was staying at overnight and it worked great. I also have the TT-30 adapter and I've only had one occasion to use it so far in nearly 20,000 miles of driving.