If you want just 30 amp ask for a TT 30R receptacle. Everyone here is offering good advise. I'm with GL1800rider 30 amp service is OK majority of time at home. I'm not an electrician but most homes have just 200 amp service. Putting in a 50 amp receptacle will consume 100 amps of the 200 available(not that you would actually use all 100 amps but you could). Most honest electricians will advise against it. Plus it will be cheaper to install.
2016 Ford F250 XLT 4X4 6.2L
2015 Rockwood Signature Ultralite 8329SS
Nights camping in 2016: 19 nights
Miles traveled in 2016: 2,575