Mark Wahlberg is living it up in Las Vegas, as is his bank account, but his wife isn’t exactly having the same good time. RadarOnline.com can reveal despite the A-lister making a fortune in the Sin City, his wife, Rhea Durham, wants to head back to Los Angeles. A source spilled: “[Durham] isn’t happy in Vegas and wants to move back to L.A. as soon as possible.” Wahlberg claimed he originally moved to provide a “better life” for Durham and their four children: daughters Ella, 21, and Grace, 14, and sons Michael, 18, and Brendan, 16. However, it’s also done wonders for the couple’s finances. The…