It was slightly disappointing because really, there was no way Vince wasn't doing Aquaman. This isn't an "I TOLD YOU SO!" moment -- this is a "DUH" moment. They played Cameron's part well, unwittingly selling Aquaman on Vince (again), but the false suspense didn't work at all.
They needed to beef things up a bit and wrap others up a bit more. It'd have been great to see E leave for a longer length of time than a few hours to make the threat of him shacking up with Sloane (HOT HOT HOT) and joining Terence a little more real, because he makes a brief disappearance and then returns as normal. It'd be nice to see Turtle become more of a success and thus not need Vince so much (the "silent treatment", while FUNNY AS HELL, was always tempered by the realisation that those two are screwed without Vince), because we never actually saw what happened. Sure the big guns didn't turn up, but did the show go well?
Still... Entourage is an awesome, awesome show, and I can't wait for Season 3. The lines and interaction between the four (and Ari) were excellent as always. And really the silent treatment was incredibly funny.