1 & 2. Well I glad that you have had better "luck" with them than I have, but not getting mail or getting it in an unresasonable time frame, if at all is a weekly event in our area.
3. I don't need a smile I need service. When you see a 30 yo man that is 6 foot tall take baby steps to walk across the room to drop a package in a bin and walk back it makes me want to go "postal". This is of course when there are 7 or 9 people waiting in line. Is there so sort of union rule that they have to walk slow so that they don't make their co-workers look bad.
USPS hires the handicapped. You should too.