While in case of events I prefer long lens with cropped frame camera, in tight spaces it might help to have an extra setup. In my case that’s 16-35 mm on full frame. You are close, very close to the action, basically breathing down their neck so to say, especially at 16 mm. Distortion is a problem at this length and unwanted elements will get into the frame also. But it gives a special angle of view and a closer to the action. An other bothering thing could be the high amount of things crammed into the frame and basically the photo can lose its essence, no focal point.