We really enjoy Crystal Palace. For a buffet, I think the food is fabulous and a large variety. Been here 5 times total over 3 trips. I'll eat lunch here anytime. I like the carved meats, salmon, and the cold salads.
I don't think one ADR time is any better than another. Went there one day, wasn't crowded at all. Next day, same trip (Dec. 2010), the buffet was MOBBED with people when we first sat down. No problem, I just squeezed in where I could, got a few things for DS and sat down and waited 10 minutes for the crowd to die down.
A matter of debate... but people are so institutionalized to be in lines at Disney... I don't think any of the buffets are intended to have a starting and ending point but I've seen people get upset when I supposedly cut in line.
Even at Tusker House where the buffet is set up as PODS or separate stations, people still try to form a line.
I just go up and get my food and I'm polite about it.