Did not see any single person walking around passing out passes to go to Lavo. Walked in to grab the free admission pass during lunch time, called in the afternoon to be put on the guestlist without any promoter's name, and showed up at night and got in less than 3 minute wait thru guestlist line.
There is 1 particular free adimssion Pass that also gives you a free drink ticket. You have to look for it though..because there's like 4 different version of free admission passes and there's only ONE that gives u a free drink. Lavo was very generous with their comp drink rule - there was none! You could have anything they had on hand. Most other places have that stupid rule that only well drinks apply to comp drinks =P So take advantage of it with your pass...
The club itself was a lot smaller than I thought, but I still liked the feel. Pretty chill, nice bar, the nicest bartenders - (yes...much friendlier than the ones at Blush in the Wynn who were snobs and even nicer than XS bartenders) who won't hesitate to help you out with drink options.
The dance floor IS quite small..but it works.
And finally, they have the most awesome bathroom ever..I absolutely LOVED it..it reminded me of some enchanted castle restroom or something, with their lion-head sinks..haha
All in all, XS is better..but Lavo is a great alternative to the others (better than Pure, the Bank, etc)