Omg, same. I Saw it at like 7:30, but there was nobody but like 5 people in the theater... crazy. But, the acting was kind of bland by everybody except Arnold and The "John" guy. The CGI was pretty good, but most of it was reused stuff. There were also many holes and problems with the Time traveling stuff. I cringed at the end when the guy said "Well, we are almost out of oxygen, so I guess this is it." That was just... over the line, I want to choke him. But really, this was not good because of the reused effects / bad acting / holes in the plot. At least that's my opinion on it.
EDIT: I did like how they tied the starting of the first movie, into this movie. That was pretty cool.