If I purchase the silver annual pass on Christmas Day would I be allowed entry even if the pass is blackedout on that day

First visit is not blacked out. The blackout dates go into effect on your subsequent visits.

Yes. But don't eat the food. My wife and I just got home with food poisoning..it was a horrible 3 hour drive home.the chicken from the restaurant next to the Simpson's ride was at fault..

First day is always good. So don't worry.

I learn something new and helpful nearly every time I'm notified of a question. Guides ROCK!! 😆