I am reminded of a class I took last year which was all about dancing in tiny spaces. Really fun class. The teacher set up an obstacle course with extremely narrow lanes going around the room. Not even enough room for a big sidestep, much less a full giro. The teacher told us to dance, and we HAD to use more than just walking. What most of us figured out very quickly is that when quarters are that tight, it becomes all about the angles. If you aim diagonal to the right instead of forward, you can get a full sidestep going down line of dance, or even a small backstep. And still follow the rules about diagonal steps and collecting. You could even do a full 8CB in a tiny space, it'll just be very zigzaggy.
The same goes for fancy steps too. If I begin a giro to my right when I am facing backwards and a little toward the center of the floor, I could follow it with a sacada or gancho into the turn and make the step go down line of dance.
People just need to be taught more geometry imo.