I flew in piston airliners long ago. They fly low and slow, and barf bags are supplied for a reason (low altitude means lots of turbulence).

Today's airliners fly high where the air is smooth, they've gotten very good at avoiding turbulent weather, and there are automated damping systems. The barf bags are still there, but I've never seen anyone use one.

The cool thing about piston airliners, though, is the the engine start.

I have flown in turboprops, which start just like a jet engine. Yes I bet the startup of a big Pratt & Whitney Twin Wasp or Wright Cyclone, belching smoke and fire would have been something to see.