There are eight in a single elimination event. Start with a size of a container of ice cream or milk. Next a transcendental number followed by a formal ask to provide details. Finish with a continent and things people put on their refrigerator or notepad.

Tides obey, luxury's sway, Gentle rocking, wealthy play, Ocean's path, a lavish way.

It follows a river, so close beside, and snuffs out a fire, for the light to hide.

I am mouthless, but I babble I am leggless, but I run I have a big brother named River

What can run but never walk, have a mouth but never talk, have a head that never weeps, and a bed that never sleeps?