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Jon Gosselin

Courtesy of Ethan Miller/Getty Images

Big weekend for Jon Gosselin.

First, his sit-down with Good Morning America, then his highly-anticipated pool party at Wet Republic at the MGM Grand Hotel & Casino in Las Vegas.

The reality-dad-turned-eligible-bachelor left lady love Hailey Glassman behind, opting instead to bring his mother Pamela Gosselin Castello along to the event.

"Glad to be MGM," Gosselin told reporters as he made his way a private, poolside bungalow, taking advantage of ample photo-op's with bikini-clad girls.

It wasn't all fun and games for Gosselin...

Jon faced several critics throughout the party, shouting things like: "Go sleep with that 18-year-old" and "We love Kate!"

But Gosselin kept is cool, spending most of the day smoking cigarettes, drinking champagne and socializing with hundreds partygoers.

Afterparty plans? Jon will hang around Vegas until Monday, when he plans to once again meet with Ed Hardy designer, Christian Audigier, to discuss their rumored clothing line.

"Everything is in the works," Gosselin hinted to reporters on the Wet Republic blue carpet.

—Reporting by Jordan Miller and Claudia Rosenbaum