Depends, i can dance in sneakers, barefoot, sandals and killer heels. *shrug* In my "raving" days i used to pay out on people wearing anything less than a total flat to dance, but that's because i was spending 6+ hours dancing hard. Nowadays, i've mellowed slightly, so i don't cane my feet 1/2 as much, so can afford to wear something not AS comfortable as a sneaker. It all depends, though... if i'm out for a glam night with the girls, i'll usually wear heels, or some strappy sandals (but that's not all the time).
Come to think of it, i've not worn sneakers clubbing for quite a few years. Some of you may scoff at me wearing heels to dance, but i don't cane my feet, as i'm not dancing to music with a really high bpm for hours. Progressive is far kinder on the feet.
As for the rest of my attire, it depends entirely on what kind of night it is.
If i'm at a festival (rare nowadays), it's usually fishing pants, a singlet and thongs/sandals. Glam night with the girls, a nice comfy dress and either heels or strappy sandals. A doof, depending on season (winter or summer), either festy gear, or jeans/pants, with jumper, but always comfy footwear (thongs or docs), as anything else on uneven ground is bound to be hell on my feet.