Yes, all but one of the pioneers, who was a real pain. She was an irritant to everyone, especially the other pioneers.
I was a pioneer for a long time, both regular and continuous auxiliary, and definitely got preferential treatment. I think pioneers were used on parts because they were available and experienced.
I know one thing.....the pioneers in the last Hall I went to always knew in advance who was being DF ahead of time and the particulars to the reasons why.
I would suspect who was about to be df'd because Dave was an elder, and I knew who had been calling the house, and he had been at judicial meetings, and was stressed and unhappy. He never told me though. It just wasn't a surprise. The irritating pioneer also had an elder husband, who was a bit demented and he told her a lot of stuff. She would "slip" to us from time to time, and I think she was trying to win friends with her insider knowledge.