My group and I aren't frequent clubbers, but we had a great time at Hyde! We had a contact who got us on the guest list so we made sure to get there before 11pm. It got a little crowded at the entrance, but after waiting a bit we were able to get in easily through our hookup.
Upon entering, you're greeting by fantastical dancers and smoke on the dance floor. Ladies were offered open bar champagne and vodka until 12:30am which was great! That + our free drink tickets = free booze!
Unless you pay for a table, there's pretty much standing room only - which is fine since all we wanted to do was dance. A section of the club is exposed to the other side of the Bellagio "lake" and its fountain show so that was really cool to see. The DJ played all the hits and everyone was on the dance floor right away. Good times!