For all the griping my family gave me about Fremont Street, my favorite night was spent with friends hopping from place to place among the old casinos. We even stopped here to play some pool and had a blast. They have some great music and cool decor (our friend loved the music case furniture).
The door man was cool as were the bar staff. You'll also get to see some very colorful patrons from people dressed up in costumes to street walkers.
I agree with another post that the tables and cues aren't stellar. So don't come expecting anything professional. But really, you're not going to want to play serious pool with UV strobe lighting and dance music blaring.