Translation of etwaig

A bystander who watched the entire scene all the time decided to help me. He was an older man, around seventy, but nonetheless he went to the oldest of these kids and slapped him. The boy was sixteen.
I went back to the busterminal and dressed for the ride. That means I put on long pants and my hiking boots. Friends have warned me about freezing conditions during bus rides because of airconditioning.
I made plans to visit a surfing contest with a girl that I have met on the first day. We agreed to meet at ten in the morning at her place. I couldn't keep my eyes open and decided to quit.