Ventured up to the top awhile ago, so I only remember so much. What I remember is the wind not co-operating with my hair and getting it all up in my face. It was fairly windy up top (which I don't understand 'cause it's not even that high up), so you might want to being a jacket if you're not visiting in the summer.
Views are cute, but not breath-taking. If I remember correctly, most of the view is constructed by the bars keeping you from jumping. Good view of the Bellagio if you stay up there long enough to catch their water show. I'd like to go back up to see if it's actually better than I remember it to be, but from what my parent's have said, it's pretty expensive. I guess I'll just have to wait for my pimp to take me and pay for me :)