If Wayne Rooney was all sad and depressed over England's embarrassing performance in the World Cup ... he's over it now -- 'cause he's moved on to the pool party scene in Vegas.
The sun-burned U.K. striker and his wife Coleen were taking in the sights in a private cabana at the Encore Beach Club on Monday.
Both were seen sippin' on drinks -- Wayne was seen checking out some of the bikini-clad partiers. Hopefully, their cabana has a TV inside -- so they can watch Team USA do something they didn't get the chance to do ... play in the knockout stage.
