If there is any discomfort from the ear infection it might be exacerbated by tripping, though if they're up enough to go to a rave...why not?
How come what? Having discomforts feel worse during a trip? Because the trip accentuates body sensations, it can make things feel quite odd to begin with and if you start off with discomfort and you twist that around...who knows what's gonna happen. For example - i used to be on the drumline at my university, and in the fall of 05 we had like a holiday parade that we had to play for. I dunno how many people have ever worn a set of marching drums, but even the lightest drums get heavy after a while. I happen to play quads, which is the worst for a skinny guy like me cuz of the way the drums are spread out, the muscles in the lower back support most of the weight. The brand we were using also had a funky shoulder harness setup goin on, and I was never able to get it to fit right, so after having played in this parade for like...45 minutes w/o takin the drums off, my back and shoulders were killin me. And wouldn't you know it that my friend and I were gonna be dosin that day... It's rather hard to describe, the sensations I had later that evening. It felt like I needed someone to reach into my back and twist my spine around like one might crack their knuckles, only it felt like there were spokes, like from a bicycle wheel, sticking into my spine all over, each pulling in a different direction. Stretching my back out didnt help at all, and then my neck started to hurt too. My shoulders got kinda numb, but like the kinda numb where you can feel that its numb.... Another time I had some weird sensations in my lower abdominal region and it felt pretty strange and made me not wanna move, but it turned out that all I needed to do was take a piss and scratch my balls a lil. I dunno acid makes your body feel weird - I mean would you dose after like getting in a car accident? I wouldn't dose when I had an ear infection, but all my ear infections have been really painful. It's like not taking lsd when you're in a bad mood or w/e, don't take lsd when you're in pain.