Couple of things to keep in mind, drinks at clubs are hellishly expensive.
Got to agree with this. Though some of the clubs are amazing.
If you are planning on going to clubs, my one piece of advice for anyone going to Vegas is try to organise entry to the clubs before you even arrive in Vegas.
For a group of lads getting into the clubs can be difficult and you can easy spend a few hours queueing to get in.
If there is a few of you, then getting a booth/table is the way to go. There's is normally a minimum drinks spend for a table. If I remember correctly it's normally one or 2 bottles of spirits. The spirits will be $500-600 pop so you are talking ~$1000 for the booth for the night. Sounds expensive but if there's 8 of you then you are guaranteed club entry, get one of the best seats in the house (with a personal waitress and sometime security staff) and loads of drink for about $150 each (Ł100).
Hard Rock hotel (though off the strip) did these amazing pool parties on a Sunday afternoon - called Rehab. Found it difficult to get entry unless you go for a cabana. Minimum spend on the cabana (food and drink) is quite a lot. Sure it is about $1500- maybe more. Again it's potentially do-able if there is 6-8 of you pitching in together.