Advice on 30 amp Install at Home

Our electrician will be coming soon for needed work, and while here I want to add 30 amp service so kids can use it when visiting and have more power available than what I have now, which is using an adapter and standard residential duplex receptacle. He's excellent but does residential and commercial work, not RV stuff. I've read here and elsewhere about problems arising due to the differences in RV wiring. He won't be touching the RV itself, but still, is there anything he should know now that might otherwise catch him by surprise and cause trouble when I plug the power cord into the new receptacle?