I think the police generally get it right. They read the right thing, for example, as “right to counsel”. Of course, an accused person is entitled to exercise that right to counsel, and there are a great number of issues and disputes as to whether the police effectively allowed someone to exercise their right to counsel.
Another issue is “reasonable and probable grounds”, whether the police acted too quickly in going right to the breath demand when they should have used a roadside demand, or something along those lines.