I 3rd the Shark Bite couplings. Although, I had one go bad in my basement when I was putting in another bib. Wasn't pretty. I just wouldn't use them anywhere you can't get to. I ended up sweating copper pipe fittings and elbows instead. But for an RV...yeah.
2013 Jayco Eagle 328 RLTS
2012 Ford F250 6.2L 4x4 CCSB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)