Name the 3 times we actually see Eddie at the Cleaver kitchen table eating or not.

I remember one time was at the first house. Strikes me June was having chopped egg sandwiches. Maybe this was the time he told her not to give him mayo.

I think once was when he slept over, and another time was when he sits down and starts playing drums on the table so June sends him upstairs.... can’t remember a third time.

That’s right. Eddie starts a loud drumming on the table in Spot Removers. As you said he slept over and ate breakfast then offered to do the dishes. The third is in Beaver and Chuey when he’s sitting there for lunch and says Chuey’s parents are stuck up.