Random skating memories:
I went skating semi-regularly over the winter when the community centre nearby had the rink opened, and it was always pretty busy. There was enough room to skate fast, but you'd have to watch out. Now, me being the experienced skater that I am, I'm not going to glide around at a turtle's pace and needed some space. I get around to a good speed, skating past people in a safe manner, and all of a sudden, a large circle of teenage girls came up and I had to slow down, or else I'd plough right through them. Half of them were on their phones, and the rest are talking to each other in this circle that took up the whole lane and was slowing everyone down. FFS.
In another instance, there were people skating with a woman who, I'd assume, was new to skating. She and her family kept to the boards, teaching her how to skate. No big deal. At the same rink were these idiot kids causing trouble (skating against the flow, trying to trip each other, etc.), and I didn't see exactly what happened, but all of a sudden, there was a shout for help, and the woman learning how to skate was face down on the ice with one of those idiot kids suddenly skating away. Deducing the situation, I assumed that the kid accidentally tripped the woman and she fell and hit her head on the ice. The people patrolling the rink didn't do shit to those kids.
I think the lessons here are: wear a goddamn helmet if you can't skate, in case you fall down. And stay in the centre of the rink if you really need to text or make a huge circle with your friends while skating.