Going to Disney on May 26-27 ?

[ToTFANATIC]

Hey, New to the boards and I have a few questions
I am going to Magic Kingdom on MAy 26 and Mgm on May 27

For Magic Kingdom
should the rides be busy?
about how long should the lines be?
where should I eat at?

For MgM
should the park be busy that day?
about how long should the lines be?
is the 50's Prime Time Diner good?

Any other comments would be GREAT!!