Lots of great tips!
Don't know if I missed this one, but kids under 10 (or thereabouts) should NEVER be sent up to the buffet on their own. They often causes messes or do etiquettally (made up a new word) questionable things, but worst of all they could easily burn themselves or get hurt underfoot another buffet-goer.
I also tip at buffets, and stack dirty plates on one side of the table.
I also say, don't take the steamer trays back to the table!! (I read this happening in another post, the poster said it happened at Crystal Palace!!!!)
I usually do one plate of cold items (salad, fruit, etc.) and another plate of hot. Then go back for another (yes, don't look at me like that!) plate of my favorites. (I take very tiny tastes the first time around) Then dessert!
My favorites are Trail's End (for sheer value!) and Boma breakfast, though I am trying Crystal Palace and Cape May Cafe this time around!
Have a fabulous time! Enjoy!