4. This one seems best to me: If you play cash games at Harrah's from 5/14 to 5/27, you will receive a drawing ticket for each hour you play. The next day, they will award a $1K WSOP seat, using a drawing at 3:30pm. So that's 14 seats available from the drawing.
5. Harrah's does have a qualifier for a $10K seat. The qualifier is July 3 at noon, and you get in by playing 40 hours during June. This one is an extremely fast structure, so you're probably not missing much if you can't do it. T4,000 max, 25/50 to start, and 20 minute rounds; just a lottery, really.
Given what you've said, if it was me, I'd focus on the Harrah's drawings and the IP drawings. I will go back to IP to find out if you need to be present to win.
Re. management of the tournament, promotions, rooms, etc., I've found that, like most players, most poker management people over-rate themselves. So I'm rarely surprised by incompetence. Sometimes, but rarely.