Okay, I can't comment on the strip clubs and stuff, but if you're down for nightclubs, I can help you out with a few promoters and stuff.
I've never done a guys only thing, but always kept it with ladies. It took me 3 trips to really figure out how to get the good deals. You're not gonna get in for free with guys, but perhaps some decent bottle service deals at least. The first time I went we just paid straight up at the door. Second time, we got fooled by the idiots on the streets. I mean it was a discount, but still, not as good as I would've liked. Third time I went I talked to some good friends (girls) who go like every other month... I learned about talking to promoters, and my clubbing/beach experience was practically free (minus the alcohol).
If you're into mega clubs:
1) XS - Surprisingly I've never gone when they open the back up with the pools and stuff, but it's supposed to be amazing. This is a ballin club. Sunday nights = pool party clubbing I hear, but I've only done Saturdays.
2) Tao - Nice Asian crowd. Good crowd in general. It was like 08-09's club to go to. XS has replaced this.
3) Surrender/Lavo - Surrender is new. Outside and stuff. It's basically Encore Beach except at night. Lavo is a smaller lounge/bar but has good celebrity turnouts.
4) Bank/Tryst - Bank is baller I hear, but nice inside. It's at Bellagio. Tryst was a nice club at the Wynn. I feel the crowd is older.
Beaches:
1) Wet Republic (Sat/Sun) - I want to say Sat is better, but you can't go wrong with this place.
2) Encore Beach (Sun) - Sunday = Kaskade if you're into that stuff. It's a huge place though. 4x the size of Tao Beach.
3) Tao Beach - I feel this one's a little small
4) Rehab (Sun) - I haven't been to this one, but this is supposedly the mother of all pool parties. Unfortunately I hear space is so limited you're going to be on someone's lap the whole time. I'm ok with dancing, but honestly I can't dance all day long.... day clubbing just feels weird 😀
Interesting clubs/bars/lounges:
1) Voodoo Lounge - 51st floor of RIO
2) Moon/Ghostbar - top floor of Palms
Decent clubs you should get in for free (this is if you have ladies). If you're paying, you're doing it wrong. Once again it's different with guys, but generally people who rave to me about going to these clubs obviously don't know what the top clubs are in Vegas:
1) Jet
2) Pure
3) LAX
Buffets:
1) Bellagio
2) Wynn - Many people recommend this one, but I've done both Wynn and Bellagio. Both are very similar. I give Bellagio the edge. My friend tried the same thing 2 weeks ago and did them back to back (2 days) and concluded Bellagio has a slight edge.
3) Rio Seafood Buffet - A must if you love seafood. Typical buffets only offer you shrimp cocktails and crab legs. That's marginal only. I wanted lobster. They have it here.
4) Rio Carnival Buffet - this is a typical buffet. It runs like $18 or $21 I forget for dinner, but it's a VERY good value for what you get. It's not the high end Bellagio/Wynn dinner, but for the price it's nice.
Both offer nice views. The former gives you a better view.