Ehh. It was OK. Fun, certainly, for what it was, but not like “OMG that’s the bestest thing ever!”
It’s a motion simulator, with all of what that means to you. I always have trouble suspending my disbelief for these types of rides - of course I’m going to be OK, it’s a ride! I never feel like I’m ever in any danger, ever. True, the same holds for “regular” rides like roller coasters or drop rides or tilt-a-whirls or what-have-you, but it’s just different. I just can’t have the same fun when strapped into what’s basically a theater.
I enjoyed it, but I’d probably have enjoyed a regular roller coaster more. I’m not much of a trekker, but I’m familiar with some of it, and I had fun with the mythos and seeing the props and such. (Probably because I’m a huge Star Wars geek, so I understand the obsession.) That part is cool, possibly more so than the actual ride itself.
It was rather funny, though - my brother had broken his leg a couple of weeks before we went to Vegas, but he wanted to do the Star Trek thing anyway. So I’m hanging back with him, helping him along (in some parts along the way to the “ships,” the studio you’re walking through shakes and such). During some of the shaky parts, he’d stop and grab my shoulder to make sure he could stay upright, and I think the Borg that was “chasing” us had to adjust some so as not to actually catch us. We weren’t way behind, by any stretch, but we were at the back of the group. Poor guy.