As for CM's being blacked out, I believe they should be for any and all hard ticket special events. If I drop 70 bucks for an exclusive event I should not have to share a queue with someone who did not pay to get in. Even if they work there. But I also believe CM's should be able to be in the parks 365 days of the year for free because that's a perk for employment. They shouldn't have to suffer blackout dates, that's a little ridiculous.
I don't know of any hard ticket event that all CMs get into for free. I have heard that some GR and concierge CMs might get a ticket to a Halloween or Christmas party, but that is a very small percentage of CMs spread out over many parties. Other CMs get, I dunno, a 10%? 20%? discount on those tickets, but few want to shell out that much money for a park they already can enter for free almost every other day of the year. The ones who usually spend the money are - you guessed it! - CPs. Lol.