I've been roller-skating a few times, but until 2010 I've never been ice-skating before. Not even Daisy (a better skater than I) had ever gotten the chance to glide on the ice. It's not as hard as you'd imagine, but you don't want to fall compared to regular wooden roller rinks.
Luckily they had these things that look like walkers, and they really do help. It's almost impossible to fall on your behind.
It also lets you go really fast with no fear of crashing off your feet.
But here's a tip, don't sit to pose for a photo. It might be ice, but it will leave your jeans wet when you stand up.