It depends on how crowded the attraction is. If there's a wait, even if it's just ten minutes, if there's a line at all, I'll get back in line. If there's no wait and the ride doesn't go backstage, I'll ask if they would mind if I rode again.
Usually, if it's not crowded, they'll offer another ride. I rode BTM about ten times in a row once because there was no line and I was really enthused about the ride. (I was also about ten!).