Maybe for a moment your senses have been "taken" by the rythmical music, the inventive multicoloured and coordinated work around the parade, or the gathering of sooo many people rushing into a frenetic excitement, all at the same time and tempo.
I can’t say I have experienced that - no doubt that there is unity in being part of a large group singing and dancing together. Kinda like being at a great sports game and being part of a really large crowd (from what I’ve witnessed, sport is a religion for some). Unfortunately, as you’ve said these celebrations get degraded by alcohol & drugs. I think it’s a symptom of our contemporary society. In the past, these festivities were likely embedded within a deeper spiritual context (& one which the participants were aware of). Contrast that to now, where it’s just an excuse to cavort about (almost naked in some cases) & get drunk. The emphasis now is more on the physical/commercial attributes of what was once something that held greater spiritual significance.
You might as well be talking about living in an illusion, not thinking, and taking some psychotropic drugs while you're at it.