The dance floor is a trap. It's a well known community axiom and for good reason. Girls sucker guys into gawking and grinding on them for validation and almost nobody gets laid from that. If you are an excellent dancer you can get some play from that, but for most guys it's just a big mistake. That being said, where dancing is clutch is once you've already met, THAT'S when you pull her to the dance floor for some down and dirty escalation. Trying to "get up on" some chick is full of fail as it leads nowhere. Some guys get makeouts from it, but it's fleeting and they almost never lead to anything else besides a quick spike of good feelings for the girl and, you guessed it, ego validation and for them it's mission accomplished.
This is why girls often say dancing "feels good". No, dancing is just dancing. They can do that in their living room. What feels good is all the attention they get from guys ogling them, and in a lot of cases the power they feel from getting to shoot down guys that approach. If dancing was such a wonderful experience they'd skip the club, drink way cheaper booze at home, and dance to the music of THEIR choosing at a place they're comfortable with, and in their pajamas.
In short, the dance floor is an ego trip in a bottle. Just stand back and watch what happens to the guys that do nothing but try to grind on girls and think that's "good game". It's pathetic how used they get and they don't even realize it.
Now here's the positive side. Dancing is a great BT spike for girls you pull onto the floor and you can quickly escalate. Yes, you can go up to compete strangers that are already dancing and get the pull, but it's actually quite difficult and rare. Plus you still need to run solid game to leave the venue with them. My preference is to meet women off the dance floor, get to know them a bit, and then dance. Just seems to work out a lot better that way and you don't waste as much time with random bar makeouts that lead nowhere.